Home / 38,386.02-52,970.96-21,392.12

Finding the Fourth Proportional to 38,386.02, 52,970.96 and 21,392.12

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Solution

The fourth proportional to 38,386.02, 52,970.96 and 21,392.12 is: 29,520.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,386.02 : 52,970.96 = 21,392.12 : x
  2. Step 2: Convert to fraction form
    38,386.02/52,970.96 = 21,392.12/x
  3. Step 3: Cross multiply
    38,386.02x = 52,970.96 × 21,392.12
  4. Step 4: Simplify right side
    38,386.02x = 1,133,160,761.02
  5. Step 5: Solve for x
    x = 1,133,160,761.02/38,386.02
  6. Step 6: Final answer
    x = 29,520.14

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Half scale
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Double scale
Find fourth proportional to 38,387.02, 52,972.33 and 21,393.12
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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.