Home / 31,083.24-42,901.50-20,473.80

Finding the Fourth Proportional to 31,083.24, 42,901.50 and 20,473.80

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Solution

The fourth proportional to 31,083.24, 42,901.50 and 20,473.80 is: 28,258.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,083.24 : 42,901.50 = 20,473.80 : x
  2. Step 2: Convert to fraction form
    31,083.24/42,901.50 = 20,473.80/x
  3. Step 3: Cross multiply
    31,083.24x = 42,901.50 × 20,473.80
  4. Step 4: Simplify right side
    31,083.24x = 878,356,730.70
  5. Step 5: Solve for x
    x = 878,356,730.70/31,083.24
  6. Step 6: Final answer
    x = 28,258.21

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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.