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Finding the Fourth Proportional to 15,569, 21,484.76 and 8,763.40

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Solution

The fourth proportional to 15,569, 21,484.76 and 8,763.40 is: 12,093.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,569 : 21,484.76 = 8,763.40 : x
  2. Step 2: Convert to fraction form
    15,569/21,484.76 = 8,763.40/x
  3. Step 3: Cross multiply
    15,569x = 21,484.76 × 8,763.40
  4. Step 4: Simplify right side
    15,569x = 188,279,545.78
  5. Step 5: Solve for x
    x = 188,279,545.78/15,569
  6. Step 6: Final answer
    x = 12,093.23

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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.