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Finding the Fourth Proportional to 26,978.32, 40,267.70 and 25,316.20

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Solution

The fourth proportional to 26,978.32, 40,267.70 and 25,316.20 is: 37,786.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,978.32 : 40,267.70 = 25,316.20 : x
  2. Step 2: Convert to fraction form
    26,978.32/40,267.70 = 25,316.20/x
  3. Step 3: Cross multiply
    26,978.32x = 40,267.70 × 25,316.20
  4. Step 4: Simplify right side
    26,978.32x = 1,019,425,146.74
  5. Step 5: Solve for x
    x = 1,019,425,146.74/26,978.32
  6. Step 6: Final answer
    x = 37,786.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.