Home / 31,912.16-47,888.20-12,192.40

Finding the Fourth Proportional to 31,912.16, 47,888.20 and 12,192.40

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Solution

The fourth proportional to 31,912.16, 47,888.20 and 12,192.40 is: 18,296.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,912.16 : 47,888.20 = 12,192.40 : x
  2. Step 2: Convert to fraction form
    31,912.16/47,888.20 = 12,192.40/x
  3. Step 3: Cross multiply
    31,912.16x = 47,888.20 × 12,192.40
  4. Step 4: Simplify right side
    31,912.16x = 583,872,089.68
  5. Step 5: Solve for x
    x = 583,872,089.68/31,912.16
  6. Step 6: Final answer
    x = 18,296.23

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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.