Home / 13,331.52-18,387-12,437.28

Finding the Fourth Proportional to 13,331.52, 18,387 and 12,437.28

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Solution

The fourth proportional to 13,331.52, 18,387 and 12,437.28 is: 17,153.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,331.52 : 18,387 = 12,437.28 : x
  2. Step 2: Convert to fraction form
    13,331.52/18,387 = 12,437.28/x
  3. Step 3: Cross multiply
    13,331.52x = 18,387 × 12,437.28
  4. Step 4: Simplify right side
    13,331.52x = 228,684,267.36
  5. Step 5: Solve for x
    x = 228,684,267.36/13,331.52
  6. Step 6: Final answer
    x = 17,153.65

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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.