Home / 26,807.90-40,192.15-12,777.78

Finding the Fourth Proportional to 26,807.90, 40,192.15 and 12,777.78

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Solution

The fourth proportional to 26,807.90, 40,192.15 and 12,777.78 is: 19,157.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,807.90 : 40,192.15 = 12,777.78 : x
  2. Step 2: Convert to fraction form
    26,807.90/40,192.15 = 12,777.78/x
  3. Step 3: Cross multiply
    26,807.90x = 40,192.15 × 12,777.78
  4. Step 4: Simplify right side
    26,807.90x = 513,566,418.48
  5. Step 5: Solve for x
    x = 513,566,418.48/26,807.90
  6. Step 6: Final answer
    x = 19,157.28

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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.