Home / 26,254.40-39,407.20-13,121.60

Finding the Fourth Proportional to 26,254.40, 39,407.20 and 13,121.60

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Solution

The fourth proportional to 26,254.40, 39,407.20 and 13,121.60 is: 19,695.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,254.40 : 39,407.20 = 13,121.60 : x
  2. Step 2: Convert to fraction form
    26,254.40/39,407.20 = 13,121.60/x
  3. Step 3: Cross multiply
    26,254.40x = 39,407.20 × 13,121.60
  4. Step 4: Simplify right side
    26,254.40x = 517,085,515.52
  5. Step 5: Solve for x
    x = 517,085,515.52/26,254.40
  6. Step 6: Final answer
    x = 19,695.19

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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.