Home / 21,079.10-31,620.45-6,287.06

Finding the Fourth Proportional to 21,079.10, 31,620.45 and 6,287.06

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Solution

The fourth proportional to 21,079.10, 31,620.45 and 6,287.06 is: 9,431.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.10 : 31,620.45 = 6,287.06 : x
  2. Step 2: Convert to fraction form
    21,079.10/31,620.45 = 6,287.06/x
  3. Step 3: Cross multiply
    21,079.10x = 31,620.45 × 6,287.06
  4. Step 4: Simplify right side
    21,079.10x = 198,799,666.38
  5. Step 5: Solve for x
    x = 198,799,666.38/21,079.10
  6. Step 6: Final answer
    x = 9,431.13

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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.