Home / 28,307.12-39,061.44-15,559.61

Finding the Fourth Proportional to 28,307.12, 39,061.44 and 15,559.61

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Solution

The fourth proportional to 28,307.12, 39,061.44 and 15,559.61 is: 21,470.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,307.12 : 39,061.44 = 15,559.61 : x
  2. Step 2: Convert to fraction form
    28,307.12/39,061.44 = 15,559.61/x
  3. Step 3: Cross multiply
    28,307.12x = 39,061.44 × 15,559.61
  4. Step 4: Simplify right side
    28,307.12x = 607,780,577.13
  5. Step 5: Solve for x
    x = 607,780,577.13/28,307.12
  6. Step 6: Final answer
    x = 21,470.95

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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.