Home / 26,986.42-40,478.05-10,345.78

Finding the Fourth Proportional to 26,986.42, 40,478.05 and 10,345.78

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Solution

The fourth proportional to 26,986.42, 40,478.05 and 10,345.78 is: 15,518.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,986.42 : 40,478.05 = 10,345.78 : x
  2. Step 2: Convert to fraction form
    26,986.42/40,478.05 = 10,345.78/x
  3. Step 3: Cross multiply
    26,986.42x = 40,478.05 × 10,345.78
  4. Step 4: Simplify right side
    26,986.42x = 418,777,000.13
  5. Step 5: Solve for x
    x = 418,777,000.13/26,986.42
  6. Step 6: Final answer
    x = 15,518.06

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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.