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Finding the Fourth Proportional to 15,081.40, 22,643.70 and 8,520.40

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Solution

The fourth proportional to 15,081.40, 22,643.70 and 8,520.40 is: 12,792.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,081.40 : 22,643.70 = 8,520.40 : x
  2. Step 2: Convert to fraction form
    15,081.40/22,643.70 = 8,520.40/x
  3. Step 3: Cross multiply
    15,081.40x = 22,643.70 × 8,520.40
  4. Step 4: Simplify right side
    15,081.40x = 192,933,381.48
  5. Step 5: Solve for x
    x = 192,933,381.48/15,081.40
  6. Step 6: Final answer
    x = 12,792.80

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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.