Home / 15,815.02-23,689.70-9,221.20

Finding the Fourth Proportional to 15,815.02, 23,689.70 and 9,221.20

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Solution

The fourth proportional to 15,815.02, 23,689.70 and 9,221.20 is: 13,812.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.02 : 23,689.70 = 9,221.20 : x
  2. Step 2: Convert to fraction form
    15,815.02/23,689.70 = 9,221.20/x
  3. Step 3: Cross multiply
    15,815.02x = 23,689.70 × 9,221.20
  4. Step 4: Simplify right side
    15,815.02x = 218,447,461.64
  5. Step 5: Solve for x
    x = 218,447,461.64/15,815.02
  6. Step 6: Final answer
    x = 13,812.66

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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.