Home / 21,126.28-31,685.38-6,335.20

Finding the Fourth Proportional to 21,126.28, 31,685.38 and 6,335.20

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Solution

The fourth proportional to 21,126.28, 31,685.38 and 6,335.20 is: 9,501.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,126.28 : 31,685.38 = 6,335.20 : x
  2. Step 2: Convert to fraction form
    21,126.28/31,685.38 = 6,335.20/x
  3. Step 3: Cross multiply
    21,126.28x = 31,685.38 × 6,335.20
  4. Step 4: Simplify right side
    21,126.28x = 200,733,219.38
  5. Step 5: Solve for x
    x = 200,733,219.38/21,126.28
  6. Step 6: Final answer
    x = 9,501.59

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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.