Home / 15,281.72-22,919.28-5,421.32

Finding the Fourth Proportional to 15,281.72, 22,919.28 and 5,421.32

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Solution

The fourth proportional to 15,281.72, 22,919.28 and 5,421.32 is: 8,130.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,281.72 : 22,919.28 = 5,421.32 : x
  2. Step 2: Convert to fraction form
    15,281.72/22,919.28 = 5,421.32/x
  3. Step 3: Cross multiply
    15,281.72x = 22,919.28 × 5,421.32
  4. Step 4: Simplify right side
    15,281.72x = 124,252,751.05
  5. Step 5: Solve for x
    x = 124,252,751.05/15,281.72
  6. Step 6: Final answer
    x = 8,130.81

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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.