Home / 20,442.16-28,210.26-11,490.04

Finding the Fourth Proportional to 20,442.16, 28,210.26 and 11,490.04

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Solution

The fourth proportional to 20,442.16, 28,210.26 and 11,490.04 is: 15,856.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.16 : 28,210.26 = 11,490.04 : x
  2. Step 2: Convert to fraction form
    20,442.16/28,210.26 = 11,490.04/x
  3. Step 3: Cross multiply
    20,442.16x = 28,210.26 × 11,490.04
  4. Step 4: Simplify right side
    20,442.16x = 324,137,015.81
  5. Step 5: Solve for x
    x = 324,137,015.81/20,442.16
  6. Step 6: Final answer
    x = 15,856.30

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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.