Home / 38,439.82-53,047.02-21,445.18

Finding the Fourth Proportional to 38,439.82, 53,047.02 and 21,445.18

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Solution

The fourth proportional to 38,439.82, 53,047.02 and 21,445.18 is: 29,594.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,439.82 : 53,047.02 = 21,445.18 : x
  2. Step 2: Convert to fraction form
    38,439.82/53,047.02 = 21,445.18/x
  3. Step 3: Cross multiply
    38,439.82x = 53,047.02 × 21,445.18
  4. Step 4: Simplify right side
    38,439.82x = 1,137,602,892.36
  5. Step 5: Solve for x
    x = 1,137,602,892.36/38,439.82
  6. Step 6: Final answer
    x = 29,594.39

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Half scale
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Double scale
Find fourth proportional to 38,440.82, 53,048.40 and 21,446.18
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.