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Finding the Fourth Proportional to 21,079.27, 31,608.27 and 7,034.32

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Solution

The fourth proportional to 21,079.27, 31,608.27 and 7,034.32 is: 10,547.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.27 : 31,608.27 = 7,034.32 : x
  2. Step 2: Convert to fraction form
    21,079.27/31,608.27 = 7,034.32/x
  3. Step 3: Cross multiply
    21,079.27x = 31,608.27 × 7,034.32
  4. Step 4: Simplify right side
    21,079.27x = 222,342,685.83
  5. Step 5: Solve for x
    x = 222,342,685.83/21,079.27
  6. Step 6: Final answer
    x = 10,547.93

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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.