Home / 28,228.64-42,345.80-7,452.14

Finding the Fourth Proportional to 28,228.64, 42,345.80 and 7,452.14

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Solution

The fourth proportional to 28,228.64, 42,345.80 and 7,452.14 is: 11,178.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,228.64 : 42,345.80 = 7,452.14 : x
  2. Step 2: Convert to fraction form
    28,228.64/42,345.80 = 7,452.14/x
  3. Step 3: Cross multiply
    28,228.64x = 42,345.80 × 7,452.14
  4. Step 4: Simplify right side
    28,228.64x = 315,566,581.02
  5. Step 5: Solve for x
    x = 315,566,581.02/28,228.64
  6. Step 6: Final answer
    x = 11,178.95

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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.