Home / 18,366.50-25,345.86-9,983

Finding the Fourth Proportional to 18,366.50, 25,345.86 and 9,983

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Solution

The fourth proportional to 18,366.50, 25,345.86 and 9,983 is: 13,776.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,366.50 : 25,345.86 = 9,983 : x
  2. Step 2: Convert to fraction form
    18,366.50/25,345.86 = 9,983/x
  3. Step 3: Cross multiply
    18,366.50x = 25,345.86 × 9,983
  4. Step 4: Simplify right side
    18,366.50x = 253,027,720.38
  5. Step 5: Solve for x
    x = 253,027,720.38/18,366.50
  6. Step 6: Final answer
    x = 13,776.59

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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.