Home / 21,024.81-31,531.73-9,928.53

Finding the Fourth Proportional to 21,024.81, 31,531.73 and 9,928.53

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Solution

The fourth proportional to 21,024.81, 31,531.73 and 9,928.53 is: 14,890.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,024.81 : 31,531.73 = 9,928.53 : x
  2. Step 2: Convert to fraction form
    21,024.81/31,531.73 = 9,928.53/x
  3. Step 3: Cross multiply
    21,024.81x = 31,531.73 × 9,928.53
  4. Step 4: Simplify right side
    21,024.81x = 313,063,677.61
  5. Step 5: Solve for x
    x = 313,063,677.61/21,024.81
  6. Step 6: Final answer
    x = 14,890.20

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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.