Home / 28,104.22-42,177.10-13,313.20

Finding the Fourth Proportional to 28,104.22, 42,177.10 and 13,313.20

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Solution

The fourth proportional to 28,104.22, 42,177.10 and 13,313.20 is: 19,979.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,104.22 : 42,177.10 = 13,313.20 : x
  2. Step 2: Convert to fraction form
    28,104.22/42,177.10 = 13,313.20/x
  3. Step 3: Cross multiply
    28,104.22x = 42,177.10 × 13,313.20
  4. Step 4: Simplify right side
    28,104.22x = 561,512,167.72
  5. Step 5: Solve for x
    x = 561,512,167.72/28,104.22
  6. Step 6: Final answer
    x = 19,979.64

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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.