Home / 31,993.60-44,139.84-21,389.92

Finding the Fourth Proportional to 31,993.60, 44,139.84 and 21,389.92

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Solution

The fourth proportional to 31,993.60, 44,139.84 and 21,389.92 is: 29,510.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,993.60 : 44,139.84 = 21,389.92 : x
  2. Step 2: Convert to fraction form
    31,993.60/44,139.84 = 21,389.92/x
  3. Step 3: Cross multiply
    31,993.60x = 44,139.84 × 21,389.92
  4. Step 4: Simplify right side
    31,993.60x = 944,147,646.41
  5. Step 5: Solve for x
    x = 944,147,646.41/31,993.60
  6. Step 6: Final answer
    x = 29,510.52

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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.