Home / 15,530.40-21,432.96-9,241.92

Finding the Fourth Proportional to 15,530.40, 21,432.96 and 9,241.92

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Solution

The fourth proportional to 15,530.40, 21,432.96 and 9,241.92 is: 12,754.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,530.40 : 21,432.96 = 9,241.92 : x
  2. Step 2: Convert to fraction form
    15,530.40/21,432.96 = 9,241.92/x
  3. Step 3: Cross multiply
    15,530.40x = 21,432.96 × 9,241.92
  4. Step 4: Simplify right side
    15,530.40x = 198,081,701.68
  5. Step 5: Solve for x
    x = 198,081,701.68/15,530.40
  6. Step 6: Final answer
    x = 12,754.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.