Home / 20,700.72-30,955.69-15,373.95

Finding the Fourth Proportional to 20,700.72, 30,955.69 and 15,373.95

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Solution

The fourth proportional to 20,700.72, 30,955.69 and 15,373.95 is: 22,990.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,700.72 : 30,955.69 = 15,373.95 : x
  2. Step 2: Convert to fraction form
    20,700.72/30,955.69 = 15,373.95/x
  3. Step 3: Cross multiply
    20,700.72x = 30,955.69 × 15,373.95
  4. Step 4: Simplify right side
    20,700.72x = 475,911,230.28
  5. Step 5: Solve for x
    x = 475,911,230.28/20,700.72
  6. Step 6: Final answer
    x = 22,990.08

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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.