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Finding the Fourth Proportional to 18,857.52, 26,011.88 and 13,559.52

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Solution

The fourth proportional to 18,857.52, 26,011.88 and 13,559.52 is: 18,703.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,857.52 : 26,011.88 = 13,559.52 : x
  2. Step 2: Convert to fraction form
    18,857.52/26,011.88 = 13,559.52/x
  3. Step 3: Cross multiply
    18,857.52x = 26,011.88 × 13,559.52
  4. Step 4: Simplify right side
    18,857.52x = 352,708,607.10
  5. Step 5: Solve for x
    x = 352,708,607.10/18,857.52
  6. Step 6: Final answer
    x = 18,703.87

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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.