Home / 13,488.47-20,238.55-7,241.20

Finding the Fourth Proportional to 13,488.47, 20,238.55 and 7,241.20

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Solution

The fourth proportional to 13,488.47, 20,238.55 and 7,241.20 is: 10,864.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,488.47 : 20,238.55 = 7,241.20 : x
  2. Step 2: Convert to fraction form
    13,488.47/20,238.55 = 7,241.20/x
  3. Step 3: Cross multiply
    13,488.47x = 20,238.55 × 7,241.20
  4. Step 4: Simplify right side
    13,488.47x = 146,551,339.93
  5. Step 5: Solve for x
    x = 146,551,339.93/13,488.47
  6. Step 6: Final answer
    x = 10,864.93

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1.5x scale

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.