Home / 31,158.60-42,998.96-17,011.68

Finding the Fourth Proportional to 31,158.60, 42,998.96 and 17,011.68

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Solution

The fourth proportional to 31,158.60, 42,998.96 and 17,011.68 is: 23,476.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,158.60 : 42,998.96 = 17,011.68 : x
  2. Step 2: Convert to fraction form
    31,158.60/42,998.96 = 17,011.68/x
  3. Step 3: Cross multiply
    31,158.60x = 42,998.96 × 17,011.68
  4. Step 4: Simplify right side
    31,158.60x = 731,484,547.85
  5. Step 5: Solve for x
    x = 731,484,547.85/31,158.60
  6. Step 6: Final answer
    x = 23,476.17

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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.