Home / 20,585.74-28,408.42-11,154.32

Finding the Fourth Proportional to 20,585.74, 28,408.42 and 11,154.32

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Solution

The fourth proportional to 20,585.74, 28,408.42 and 11,154.32 is: 15,393.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,585.74 : 28,408.42 = 11,154.32 : x
  2. Step 2: Convert to fraction form
    20,585.74/28,408.42 = 11,154.32/x
  3. Step 3: Cross multiply
    20,585.74x = 28,408.42 × 11,154.32
  4. Step 4: Simplify right side
    20,585.74x = 316,876,607.37
  5. Step 5: Solve for x
    x = 316,876,607.37/20,585.74
  6. Step 6: Final answer
    x = 15,393.02

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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.