Home / 31,868.64-47,809.04-12,145.55

Finding the Fourth Proportional to 31,868.64, 47,809.04 and 12,145.55

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Solution

The fourth proportional to 31,868.64, 47,809.04 and 12,145.55 is: 18,220.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,868.64 : 47,809.04 = 12,145.55 : x
  2. Step 2: Convert to fraction form
    31,868.64/47,809.04 = 12,145.55/x
  3. Step 3: Cross multiply
    31,868.64x = 47,809.04 × 12,145.55
  4. Step 4: Simplify right side
    31,868.64x = 580,666,786.00
  5. Step 5: Solve for x
    x = 580,666,786.00/31,868.64
  6. Step 6: Final answer
    x = 18,220.63

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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.