Home / 13,445.40-20,151.06-5,645.16

Finding the Fourth Proportional to 13,445.40, 20,151.06 and 5,645.16

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Solution

The fourth proportional to 13,445.40, 20,151.06 and 5,645.16 is: 8,460.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.40 : 20,151.06 = 5,645.16 : x
  2. Step 2: Convert to fraction form
    13,445.40/20,151.06 = 5,645.16/x
  3. Step 3: Cross multiply
    13,445.40x = 20,151.06 × 5,645.16
  4. Step 4: Simplify right side
    13,445.40x = 113,755,957.87
  5. Step 5: Solve for x
    x = 113,755,957.87/13,445.40
  6. Step 6: Final answer
    x = 8,460.59

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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.