Home / 16,989.28-25,475.69-7,125.91

Finding the Fourth Proportional to 16,989.28, 25,475.69 and 7,125.91

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Solution

The fourth proportional to 16,989.28, 25,475.69 and 7,125.91 is: 10,685.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,989.28 : 25,475.69 = 7,125.91 : x
  2. Step 2: Convert to fraction form
    16,989.28/25,475.69 = 7,125.91/x
  3. Step 3: Cross multiply
    16,989.28x = 25,475.69 × 7,125.91
  4. Step 4: Simplify right side
    16,989.28x = 181,537,428.25
  5. Step 5: Solve for x
    x = 181,537,428.25/16,989.28
  6. Step 6: Final answer
    x = 10,685.41

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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.