Home / 42,318.99-63,423.81-20,139.17

Finding the Fourth Proportional to 42,318.99, 63,423.81 and 20,139.17

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Solution

The fourth proportional to 42,318.99, 63,423.81 and 20,139.17 is: 30,182.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,318.99 : 63,423.81 = 20,139.17 : x
  2. Step 2: Convert to fraction form
    42,318.99/63,423.81 = 20,139.17/x
  3. Step 3: Cross multiply
    42,318.99x = 63,423.81 × 20,139.17
  4. Step 4: Simplify right side
    42,318.99x = 1,277,302,574.52
  5. Step 5: Solve for x
    x = 1,277,302,574.52/42,318.99
  6. Step 6: Final answer
    x = 30,182.73

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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.