Home / 15,497.28-21,385.67-8,423.55

Finding the Fourth Proportional to 15,497.28, 21,385.67 and 8,423.55

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Solution

The fourth proportional to 15,497.28, 21,385.67 and 8,423.55 is: 11,624.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,497.28 : 21,385.67 = 8,423.55 : x
  2. Step 2: Convert to fraction form
    15,497.28/21,385.67 = 8,423.55/x
  3. Step 3: Cross multiply
    15,497.28x = 21,385.67 × 8,423.55
  4. Step 4: Simplify right side
    15,497.28x = 180,143,218.41
  5. Step 5: Solve for x
    x = 180,143,218.41/15,497.28
  6. Step 6: Final answer
    x = 11,624.18

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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.