Home / 13,641.11-20,445.26-7,400.87

Finding the Fourth Proportional to 13,641.11, 20,445.26 and 7,400.87

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Solution

The fourth proportional to 13,641.11, 20,445.26 and 7,400.87 is: 11,092.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,641.11 : 20,445.26 = 7,400.87 : x
  2. Step 2: Convert to fraction form
    13,641.11/20,445.26 = 7,400.87/x
  3. Step 3: Cross multiply
    13,641.11x = 20,445.26 × 7,400.87
  4. Step 4: Simplify right side
    13,641.11x = 151,312,690.45
  5. Step 5: Solve for x
    x = 151,312,690.45/13,641.11
  6. Step 6: Final answer
    x = 11,092.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.