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Finding the Fourth Proportional to 18,897.30, 26,077.65 and 10,513.62

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Solution

The fourth proportional to 18,897.30, 26,077.65 and 10,513.62 is: 14,508.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897.30 : 26,077.65 = 10,513.62 : x
  2. Step 2: Convert to fraction form
    18,897.30/26,077.65 = 10,513.62/x
  3. Step 3: Cross multiply
    18,897.30x = 26,077.65 × 10,513.62
  4. Step 4: Simplify right side
    18,897.30x = 274,170,502.59
  5. Step 5: Solve for x
    x = 274,170,502.59/18,897.30
  6. Step 6: Final answer
    x = 14,508.45

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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.