Home / 26,319.60-39,479.40-11,512.80

Finding the Fourth Proportional to 26,319.60, 39,479.40 and 11,512.80

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Solution

The fourth proportional to 26,319.60, 39,479.40 and 11,512.80 is: 17,269.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,319.60 : 39,479.40 = 11,512.80 : x
  2. Step 2: Convert to fraction form
    26,319.60/39,479.40 = 11,512.80/x
  3. Step 3: Cross multiply
    26,319.60x = 39,479.40 × 11,512.80
  4. Step 4: Simplify right side
    26,319.60x = 454,518,436.32
  5. Step 5: Solve for x
    x = 454,518,436.32/26,319.60
  6. Step 6: Final answer
    x = 17,269.20

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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.