Home / 18,281.74-27,419.28-5,130.82

Finding the Fourth Proportional to 18,281.74, 27,419.28 and 5,130.82

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Solution

The fourth proportional to 18,281.74, 27,419.28 and 5,130.82 is: 7,695.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,281.74 : 27,419.28 = 5,130.82 : x
  2. Step 2: Convert to fraction form
    18,281.74/27,419.28 = 5,130.82/x
  3. Step 3: Cross multiply
    18,281.74x = 27,419.28 × 5,130.82
  4. Step 4: Simplify right side
    18,281.74x = 140,683,390.21
  5. Step 5: Solve for x
    x = 140,683,390.21/18,281.74
  6. Step 6: Final answer
    x = 7,695.30

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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.