Home / 15,990.15-22,071.92-9,620.31

Finding the Fourth Proportional to 15,990.15, 22,071.92 and 9,620.31

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Solution

The fourth proportional to 15,990.15, 22,071.92 and 9,620.31 is: 13,279.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,990.15 : 22,071.92 = 9,620.31 : x
  2. Step 2: Convert to fraction form
    15,990.15/22,071.92 = 9,620.31/x
  3. Step 3: Cross multiply
    15,990.15x = 22,071.92 × 9,620.31
  4. Step 4: Simplify right side
    15,990.15x = 212,338,664.59
  5. Step 5: Solve for x
    x = 212,338,664.59/15,990.15
  6. Step 6: Final answer
    x = 13,279.34

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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.