Home / 15,386.68-21,233.72-9,723.95

Finding the Fourth Proportional to 15,386.68, 21,233.72 and 9,723.95

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Solution

The fourth proportional to 15,386.68, 21,233.72 and 9,723.95 is: 13,419.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,386.68 : 21,233.72 = 9,723.95 : x
  2. Step 2: Convert to fraction form
    15,386.68/21,233.72 = 9,723.95/x
  3. Step 3: Cross multiply
    15,386.68x = 21,233.72 × 9,723.95
  4. Step 4: Simplify right side
    15,386.68x = 206,475,602.01
  5. Step 5: Solve for x
    x = 206,475,602.01/15,386.68
  6. Step 6: Final answer
    x = 13,419.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.