Home / 28,033.40-38,686.20-15,458.06

Finding the Fourth Proportional to 28,033.40, 38,686.20 and 15,458.06

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Solution

The fourth proportional to 28,033.40, 38,686.20 and 15,458.06 is: 21,332.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,033.40 : 38,686.20 = 15,458.06 : x
  2. Step 2: Convert to fraction form
    28,033.40/38,686.20 = 15,458.06/x
  3. Step 3: Cross multiply
    28,033.40x = 38,686.20 × 15,458.06
  4. Step 4: Simplify right side
    28,033.40x = 598,013,600.77
  5. Step 5: Solve for x
    x = 598,013,600.77/28,033.40
  6. Step 6: Final answer
    x = 21,332.18

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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.