Home / 18,639.52-25,722.96-10,142.12

Finding the Fourth Proportional to 18,639.52, 25,722.96 and 10,142.12

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Solution

The fourth proportional to 18,639.52, 25,722.96 and 10,142.12 is: 13,996.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.52 : 25,722.96 = 10,142.12 : x
  2. Step 2: Convert to fraction form
    18,639.52/25,722.96 = 10,142.12/x
  3. Step 3: Cross multiply
    18,639.52x = 25,722.96 × 10,142.12
  4. Step 4: Simplify right side
    18,639.52x = 260,885,347.08
  5. Step 5: Solve for x
    x = 260,885,347.08/18,639.52
  6. Step 6: Final answer
    x = 13,996.36

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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.