Home / 26,918.80-40,402.20-15,811.60

Finding the Fourth Proportional to 26,918.80, 40,402.20 and 15,811.60

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Solution

The fourth proportional to 26,918.80, 40,402.20 and 15,811.60 is: 23,731.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,918.80 : 40,402.20 = 15,811.60 : x
  2. Step 2: Convert to fraction form
    26,918.80/40,402.20 = 15,811.60/x
  3. Step 3: Cross multiply
    26,918.80x = 40,402.20 × 15,811.60
  4. Step 4: Simplify right side
    26,918.80x = 638,823,425.52
  5. Step 5: Solve for x
    x = 638,823,425.52/26,918.80
  6. Step 6: Final answer
    x = 23,731.50

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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.