Home / 19,321.28-28,934.40-9,428.66

Finding the Fourth Proportional to 19,321.28, 28,934.40 and 9,428.66

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Solution

The fourth proportional to 19,321.28, 28,934.40 and 9,428.66 is: 14,119.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,321.28 : 28,934.40 = 9,428.66 : x
  2. Step 2: Convert to fraction form
    19,321.28/28,934.40 = 9,428.66/x
  3. Step 3: Cross multiply
    19,321.28x = 28,934.40 × 9,428.66
  4. Step 4: Simplify right side
    19,321.28x = 272,812,692.24
  5. Step 5: Solve for x
    x = 272,812,692.24/19,321.28
  6. Step 6: Final answer
    x = 14,119.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.