Home / 26,581.60-39,862.80-13,429.60

Finding the Fourth Proportional to 26,581.60, 39,862.80 and 13,429.60

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Solution

The fourth proportional to 26,581.60, 39,862.80 and 13,429.60 is: 20,139.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,581.60 : 39,862.80 = 13,429.60 : x
  2. Step 2: Convert to fraction form
    26,581.60/39,862.80 = 13,429.60/x
  3. Step 3: Cross multiply
    26,581.60x = 39,862.80 × 13,429.60
  4. Step 4: Simplify right side
    26,581.60x = 535,341,458.88
  5. Step 5: Solve for x
    x = 535,341,458.88/26,581.60
  6. Step 6: Final answer
    x = 20,139.55

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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.