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Finding the Fourth Proportional to 18,855.52, 26,009.12 and 13,557.52

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Solution

The fourth proportional to 18,855.52, 26,009.12 and 13,557.52 is: 18,701.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,855.52 : 26,009.12 = 13,557.52 : x
  2. Step 2: Convert to fraction form
    18,855.52/26,009.12 = 13,557.52/x
  3. Step 3: Cross multiply
    18,855.52x = 26,009.12 × 13,557.52
  4. Step 4: Simplify right side
    18,855.52x = 352,619,164.58
  5. Step 5: Solve for x
    x = 352,619,164.58/18,855.52
  6. Step 6: Final answer
    x = 18,701.11

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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.