Home / 18,639.68-27,901.56-13,931.96

Finding the Fourth Proportional to 18,639.68, 27,901.56 and 13,931.96

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Solution

The fourth proportional to 18,639.68, 27,901.56 and 13,931.96 is: 20,854.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.68 : 27,901.56 = 13,931.96 : x
  2. Step 2: Convert to fraction form
    18,639.68/27,901.56 = 13,931.96/x
  3. Step 3: Cross multiply
    18,639.68x = 27,901.56 × 13,931.96
  4. Step 4: Simplify right side
    18,639.68x = 388,723,417.86
  5. Step 5: Solve for x
    x = 388,723,417.86/18,639.68
  6. Step 6: Final answer
    x = 20,854.62

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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.