Home / 21,358.80-32,042.60-7,319.88

Finding the Fourth Proportional to 21,358.80, 32,042.60 and 7,319.88

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Solution

The fourth proportional to 21,358.80, 32,042.60 and 7,319.88 is: 10,981.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,358.80 : 32,042.60 = 7,319.88 : x
  2. Step 2: Convert to fraction form
    21,358.80/32,042.60 = 7,319.88/x
  3. Step 3: Cross multiply
    21,358.80x = 32,042.60 × 7,319.88
  4. Step 4: Simplify right side
    21,358.80x = 234,547,986.89
  5. Step 5: Solve for x
    x = 234,547,986.89/21,358.80
  6. Step 6: Final answer
    x = 10,981.33

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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.