Home / 20,344.28-28,077.48-12,391.16

Finding the Fourth Proportional to 20,344.28, 28,077.48 and 12,391.16

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Solution

The fourth proportional to 20,344.28, 28,077.48 and 12,391.16 is: 17,101.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,344.28 : 28,077.48 = 12,391.16 : x
  2. Step 2: Convert to fraction form
    20,344.28/28,077.48 = 12,391.16/x
  3. Step 3: Cross multiply
    20,344.28x = 28,077.48 × 12,391.16
  4. Step 4: Simplify right side
    20,344.28x = 347,912,547.08
  5. Step 5: Solve for x
    x = 347,912,547.08/20,344.28
  6. Step 6: Final answer
    x = 17,101.25

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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.