Home / 18,366.90-25,345.62-9,983.40

Finding the Fourth Proportional to 18,366.90, 25,345.62 and 9,983.40

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Solution

The fourth proportional to 18,366.90, 25,345.62 and 9,983.40 is: 13,776.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,366.90 : 25,345.62 = 9,983.40 : x
  2. Step 2: Convert to fraction form
    18,366.90/25,345.62 = 9,983.40/x
  3. Step 3: Cross multiply
    18,366.90x = 25,345.62 × 9,983.40
  4. Step 4: Simplify right side
    18,366.90x = 253,035,462.71
  5. Step 5: Solve for x
    x = 253,035,462.71/18,366.90
  6. Step 6: Final answer
    x = 13,776.71

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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.