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Finding the Fourth Proportional to 15,312.20, 22,981.80 and 9,064.40

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Solution

The fourth proportional to 15,312.20, 22,981.80 and 9,064.40 is: 13,604.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,312.20 : 22,981.80 = 9,064.40 : x
  2. Step 2: Convert to fraction form
    15,312.20/22,981.80 = 9,064.40/x
  3. Step 3: Cross multiply
    15,312.20x = 22,981.80 × 9,064.40
  4. Step 4: Simplify right side
    15,312.20x = 208,316,227.92
  5. Step 5: Solve for x
    x = 208,316,227.92/15,312.20
  6. Step 6: Final answer
    x = 13,604.59

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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.