Home / 21,123.36-31,683.16-6,335.56

Finding the Fourth Proportional to 21,123.36, 31,683.16 and 6,335.56

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Solution

The fourth proportional to 21,123.36, 31,683.16 and 6,335.56 is: 9,502.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,123.36 : 31,683.16 = 6,335.56 : x
  2. Step 2: Convert to fraction form
    21,123.36/31,683.16 = 6,335.56/x
  3. Step 3: Cross multiply
    21,123.36x = 31,683.16 × 6,335.56
  4. Step 4: Simplify right side
    21,123.36x = 200,730,561.17
  5. Step 5: Solve for x
    x = 200,730,561.17/21,123.36
  6. Step 6: Final answer
    x = 9,502.78

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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.