Home / 28,305.76-39,061.56-15,730.24

Finding the Fourth Proportional to 28,305.76, 39,061.56 and 15,730.24

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Solution

The fourth proportional to 28,305.76, 39,061.56 and 15,730.24 is: 21,707.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305.76 : 39,061.56 = 15,730.24 : x
  2. Step 2: Convert to fraction form
    28,305.76/39,061.56 = 15,730.24/x
  3. Step 3: Cross multiply
    28,305.76x = 39,061.56 × 15,730.24
  4. Step 4: Simplify right side
    28,305.76x = 614,447,713.57
  5. Step 5: Solve for x
    x = 614,447,713.57/28,305.76
  6. Step 6: Final answer
    x = 21,707.52

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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.