Home / 20,686.17-31,036.28-9,007.05

Finding the Fourth Proportional to 20,686.17, 31,036.28 and 9,007.05

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Solution

The fourth proportional to 20,686.17, 31,036.28 and 9,007.05 is: 13,513.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686.17 : 31,036.28 = 9,007.05 : x
  2. Step 2: Convert to fraction form
    20,686.17/31,036.28 = 9,007.05/x
  3. Step 3: Cross multiply
    20,686.17x = 31,036.28 × 9,007.05
  4. Step 4: Simplify right side
    20,686.17x = 279,545,325.77
  5. Step 5: Solve for x
    x = 279,545,325.77/20,686.17
  6. Step 6: Final answer
    x = 13,513.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.