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Finding the Fourth Proportional to 39,898.40, 59,797.20 and 20,182.40

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Solution

The fourth proportional to 39,898.40, 59,797.20 and 20,182.40 is: 30,248.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,898.40 : 59,797.20 = 20,182.40 : x
  2. Step 2: Convert to fraction form
    39,898.40/59,797.20 = 20,182.40/x
  3. Step 3: Cross multiply
    39,898.40x = 59,797.20 × 20,182.40
  4. Step 4: Simplify right side
    39,898.40x = 1,206,851,009.28
  5. Step 5: Solve for x
    x = 1,206,851,009.28/39,898.40
  6. Step 6: Final answer
    x = 30,248.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.