Home / 28,306.08-39,061.44-15,730.56

Finding the Fourth Proportional to 28,306.08, 39,061.44 and 15,730.56

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Solution

The fourth proportional to 28,306.08, 39,061.44 and 15,730.56 is: 21,707.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,306.08 : 39,061.44 = 15,730.56 : x
  2. Step 2: Convert to fraction form
    28,306.08/39,061.44 = 15,730.56/x
  3. Step 3: Cross multiply
    28,306.08x = 39,061.44 × 15,730.56
  4. Step 4: Simplify right side
    28,306.08x = 614,458,325.61
  5. Step 5: Solve for x
    x = 614,458,325.61/28,306.08
  6. Step 6: Final answer
    x = 21,707.64

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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.