Home / 21,207.20-31,810.88-7,167.34

Finding the Fourth Proportional to 21,207.20, 31,810.88 and 7,167.34

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Solution

The fourth proportional to 21,207.20, 31,810.88 and 7,167.34 is: 10,751.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,207.20 : 31,810.88 = 7,167.34 : x
  2. Step 2: Convert to fraction form
    21,207.20/31,810.88 = 7,167.34/x
  3. Step 3: Cross multiply
    21,207.20x = 31,810.88 × 7,167.34
  4. Step 4: Simplify right side
    21,207.20x = 227,999,356.82
  5. Step 5: Solve for x
    x = 227,999,356.82/21,207.20
  6. Step 6: Final answer
    x = 10,751.04

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1.5x scale

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.