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Finding the Fourth Proportional to 13,555.92, 18,706.98 and 7,587.59

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Solution

The fourth proportional to 13,555.92, 18,706.98 and 7,587.59 is: 10,470.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.92 : 18,706.98 = 7,587.59 : x
  2. Step 2: Convert to fraction form
    13,555.92/18,706.98 = 7,587.59/x
  3. Step 3: Cross multiply
    13,555.92x = 18,706.98 × 7,587.59
  4. Step 4: Simplify right side
    13,555.92x = 141,940,829.30
  5. Step 5: Solve for x
    x = 141,940,829.30/13,555.92
  6. Step 6: Final answer
    x = 10,470.76

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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.