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Finding the Fourth Proportional to 18,758.67, 25,881.35 and 10,800.69

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Solution

The fourth proportional to 18,758.67, 25,881.35 and 10,800.69 is: 14,901.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,758.67 : 25,881.35 = 10,800.69 : x
  2. Step 2: Convert to fraction form
    18,758.67/25,881.35 = 10,800.69/x
  3. Step 3: Cross multiply
    18,758.67x = 25,881.35 × 10,800.69
  4. Step 4: Simplify right side
    18,758.67x = 279,536,384.13
  5. Step 5: Solve for x
    x = 279,536,384.13/18,758.67
  6. Step 6: Final answer
    x = 14,901.72

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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.