Home / 20,352.32-28,082.93-11,400.20

Finding the Fourth Proportional to 20,352.32, 28,082.93 and 11,400.20

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Solution

The fourth proportional to 20,352.32, 28,082.93 and 11,400.20 is: 15,730.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,352.32 : 28,082.93 = 11,400.20 : x
  2. Step 2: Convert to fraction form
    20,352.32/28,082.93 = 11,400.20/x
  3. Step 3: Cross multiply
    20,352.32x = 28,082.93 × 11,400.20
  4. Step 4: Simplify right side
    20,352.32x = 320,151,018.59
  5. Step 5: Solve for x
    x = 320,151,018.59/20,352.32
  6. Step 6: Final answer
    x = 15,730.44

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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.