Home / 31,160.73-42,996.74-18,412.14

Finding the Fourth Proportional to 31,160.73, 42,996.74 and 18,412.14

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Solution

The fourth proportional to 31,160.73, 42,996.74 and 18,412.14 is: 25,405.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,160.73 : 42,996.74 = 18,412.14 : x
  2. Step 2: Convert to fraction form
    31,160.73/42,996.74 = 18,412.14/x
  3. Step 3: Cross multiply
    31,160.73x = 42,996.74 × 18,412.14
  4. Step 4: Simplify right side
    31,160.73x = 791,662,169.17
  5. Step 5: Solve for x
    x = 791,662,169.17/31,160.73
  6. Step 6: Final answer
    x = 25,405.76

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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.