Home / 39,440.16-54,427.52-21,535.20

Finding the Fourth Proportional to 39,440.16, 54,427.52 and 21,535.20

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Solution

The fourth proportional to 39,440.16, 54,427.52 and 21,535.20 is: 29,718.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,440.16 : 54,427.52 = 21,535.20 : x
  2. Step 2: Convert to fraction form
    39,440.16/54,427.52 = 21,535.20/x
  3. Step 3: Cross multiply
    39,440.16x = 54,427.52 × 21,535.20
  4. Step 4: Simplify right side
    39,440.16x = 1,172,107,528.70
  5. Step 5: Solve for x
    x = 1,172,107,528.70/39,440.16
  6. Step 6: Final answer
    x = 29,718.63

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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.