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Finding the Fourth Proportional to 18,897.52, 26,079.84 and 12,513.04

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Solution

The fourth proportional to 18,897.52, 26,079.84 and 12,513.04 is: 17,268.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897.52 : 26,079.84 = 12,513.04 : x
  2. Step 2: Convert to fraction form
    18,897.52/26,079.84 = 12,513.04/x
  3. Step 3: Cross multiply
    18,897.52x = 26,079.84 × 12,513.04
  4. Step 4: Simplify right side
    18,897.52x = 326,338,081.11
  5. Step 5: Solve for x
    x = 326,338,081.11/18,897.52
  6. Step 6: Final answer
    x = 17,268.83

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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.