Home / 15,061.72-20,778.18-9,758.32

Finding the Fourth Proportional to 15,061.72, 20,778.18 and 9,758.32

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Solution

The fourth proportional to 15,061.72, 20,778.18 and 9,758.32 is: 13,461.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,061.72 : 20,778.18 = 9,758.32 : x
  2. Step 2: Convert to fraction form
    15,061.72/20,778.18 = 9,758.32/x
  3. Step 3: Cross multiply
    15,061.72x = 20,778.18 × 9,758.32
  4. Step 4: Simplify right side
    15,061.72x = 202,760,129.46
  5. Step 5: Solve for x
    x = 202,760,129.46/15,061.72
  6. Step 6: Final answer
    x = 13,461.95

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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.