Home / 21,812.95-32,719.61-9,326.53

Finding the Fourth Proportional to 21,812.95, 32,719.61 and 9,326.53

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Solution

The fourth proportional to 21,812.95, 32,719.61 and 9,326.53 is: 13,989.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,812.95 : 32,719.61 = 9,326.53 : x
  2. Step 2: Convert to fraction form
    21,812.95/32,719.61 = 9,326.53/x
  3. Step 3: Cross multiply
    21,812.95x = 32,719.61 × 9,326.53
  4. Step 4: Simplify right side
    21,812.95x = 305,160,424.25
  5. Step 5: Solve for x
    x = 305,160,424.25/21,812.95
  6. Step 6: Final answer
    x = 13,989.87

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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.