Home / 21,207.12-31,810.68-7,356.24

Finding the Fourth Proportional to 21,207.12, 31,810.68 and 7,356.24

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Solution

The fourth proportional to 21,207.12, 31,810.68 and 7,356.24 is: 11,034.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,207.12 : 31,810.68 = 7,356.24 : x
  2. Step 2: Convert to fraction form
    21,207.12/31,810.68 = 7,356.24/x
  3. Step 3: Cross multiply
    21,207.12x = 31,810.68 × 7,356.24
  4. Step 4: Simplify right side
    21,207.12x = 234,006,996.64
  5. Step 5: Solve for x
    x = 234,006,996.64/21,207.12
  6. Step 6: Final answer
    x = 11,034.36

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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.