Home / 31,549.86-47,278.04-12,807.09

Finding the Fourth Proportional to 31,549.86, 47,278.04 and 12,807.09

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Solution

The fourth proportional to 31,549.86, 47,278.04 and 12,807.09 is: 19,191.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,549.86 : 47,278.04 = 12,807.09 : x
  2. Step 2: Convert to fraction form
    31,549.86/47,278.04 = 12,807.09/x
  3. Step 3: Cross multiply
    31,549.86x = 47,278.04 × 12,807.09
  4. Step 4: Simplify right side
    31,549.86x = 605,494,113.30
  5. Step 5: Solve for x
    x = 605,494,113.30/31,549.86
  6. Step 6: Final answer
    x = 19,191.66

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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.