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Finding the Fourth Proportional to 12,859.71, 17,752.17 and 7,554.86

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Solution

The fourth proportional to 12,859.71, 17,752.17 and 7,554.86 is: 10,429.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,859.71 : 17,752.17 = 7,554.86 : x
  2. Step 2: Convert to fraction form
    12,859.71/17,752.17 = 7,554.86/x
  3. Step 3: Cross multiply
    12,859.71x = 17,752.17 × 7,554.86
  4. Step 4: Simplify right side
    12,859.71x = 134,115,159.05
  5. Step 5: Solve for x
    x = 134,115,159.05/12,859.71
  6. Step 6: Final answer
    x = 10,429.10

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Half scale
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Double scale
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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.