Home / 20,560.61-28,373.63-11,129.16

Finding the Fourth Proportional to 20,560.61, 28,373.63 and 11,129.16

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Solution

The fourth proportional to 20,560.61, 28,373.63 and 11,129.16 is: 15,358.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,560.61 : 28,373.63 = 11,129.16 : x
  2. Step 2: Convert to fraction form
    20,560.61/28,373.63 = 11,129.16/x
  3. Step 3: Cross multiply
    20,560.61x = 28,373.63 × 11,129.16
  4. Step 4: Simplify right side
    20,560.61x = 315,774,612.41
  5. Step 5: Solve for x
    x = 315,774,612.41/20,560.61
  6. Step 6: Final answer
    x = 15,358.24

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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.