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Finding the Fourth Proportional to 13,488.95, 18,572.39 and 11,468.39

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Solution

The fourth proportional to 13,488.95, 18,572.39 and 11,468.39 is: 15,790.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,488.95 : 18,572.39 = 11,468.39 : x
  2. Step 2: Convert to fraction form
    13,488.95/18,572.39 = 11,468.39/x
  3. Step 3: Cross multiply
    13,488.95x = 18,572.39 × 11,468.39
  4. Step 4: Simplify right side
    13,488.95x = 212,995,411.75
  5. Step 5: Solve for x
    x = 212,995,411.75/13,488.95
  6. Step 6: Final answer
    x = 15,790.36

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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.