Home / 28,204.47-42,320.66-13,409.55

Finding the Fourth Proportional to 28,204.47, 42,320.66 and 13,409.55

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Solution

The fourth proportional to 28,204.47, 42,320.66 and 13,409.55 is: 20,120.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,204.47 : 42,320.66 = 13,409.55 : x
  2. Step 2: Convert to fraction form
    28,204.47/42,320.66 = 13,409.55/x
  3. Step 3: Cross multiply
    28,204.47x = 42,320.66 × 13,409.55
  4. Step 4: Simplify right side
    28,204.47x = 567,500,939.26
  5. Step 5: Solve for x
    x = 567,500,939.26/28,204.47
  6. Step 6: Final answer
    x = 20,120.96

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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.