Home / 21,099.45-31,642.69-10,002.86

Finding the Fourth Proportional to 21,099.45, 31,642.69 and 10,002.86

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Solution

The fourth proportional to 21,099.45, 31,642.69 and 10,002.86 is: 15,001.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.45 : 31,642.69 = 10,002.86 : x
  2. Step 2: Convert to fraction form
    21,099.45/31,642.69 = 10,002.86/x
  3. Step 3: Cross multiply
    21,099.45x = 31,642.69 × 10,002.86
  4. Step 4: Simplify right side
    21,099.45x = 316,517,398.09
  5. Step 5: Solve for x
    x = 316,517,398.09/21,099.45
  6. Step 6: Final answer
    x = 15,001.22

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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.