Home / 38,701.40-53,407.34-21,705.64

Finding the Fourth Proportional to 38,701.40, 53,407.34 and 21,705.64

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Solution

The fourth proportional to 38,701.40, 53,407.34 and 21,705.64 is: 29,953.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,701.40 : 53,407.34 = 21,705.64 : x
  2. Step 2: Convert to fraction form
    38,701.40/53,407.34 = 21,705.64/x
  3. Step 3: Cross multiply
    38,701.40x = 53,407.34 × 21,705.64
  4. Step 4: Simplify right side
    38,701.40x = 1,159,240,495.40
  5. Step 5: Solve for x
    x = 1,159,240,495.40/38,701.40
  6. Step 6: Final answer
    x = 29,953.45

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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.