Home / 19,989.02-30,034.56-15,104.72

Finding the Fourth Proportional to 19,989.02, 30,034.56 and 15,104.72

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Solution

The fourth proportional to 19,989.02, 30,034.56 and 15,104.72 is: 22,695.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,989.02 : 30,034.56 = 15,104.72 : x
  2. Step 2: Convert to fraction form
    19,989.02/30,034.56 = 15,104.72/x
  3. Step 3: Cross multiply
    19,989.02x = 30,034.56 × 15,104.72
  4. Step 4: Simplify right side
    19,989.02x = 453,663,619.12
  5. Step 5: Solve for x
    x = 453,663,619.12/19,989.02
  6. Step 6: Final answer
    x = 22,695.64

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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.