Home / 28,509.45-39,342.20-15,934.17

Finding the Fourth Proportional to 28,509.45, 39,342.20 and 15,934.17

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Solution

The fourth proportional to 28,509.45, 39,342.20 and 15,934.17 is: 21,988.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,509.45 : 39,342.20 = 15,934.17 : x
  2. Step 2: Convert to fraction form
    28,509.45/39,342.20 = 15,934.17/x
  3. Step 3: Cross multiply
    28,509.45x = 39,342.20 × 15,934.17
  4. Step 4: Simplify right side
    28,509.45x = 626,885,223.30
  5. Step 5: Solve for x
    x = 626,885,223.30/28,509.45
  6. Step 6: Final answer
    x = 21,988.68

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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.