Home / 20,823.95-31,240.52-9,724.55

Finding the Fourth Proportional to 20,823.95, 31,240.52 and 9,724.55

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Solution

The fourth proportional to 20,823.95, 31,240.52 and 9,724.55 is: 14,588.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,823.95 : 31,240.52 = 9,724.55 : x
  2. Step 2: Convert to fraction form
    20,823.95/31,240.52 = 9,724.55/x
  3. Step 3: Cross multiply
    20,823.95x = 31,240.52 × 9,724.55
  4. Step 4: Simplify right side
    20,823.95x = 303,799,866.87
  5. Step 5: Solve for x
    x = 303,799,866.87/20,823.95
  6. Step 6: Final answer
    x = 14,588.96

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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.