Home / 31,962.32-47,962.80-13,242.80

Finding the Fourth Proportional to 31,962.32, 47,962.80 and 13,242.80

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Solution

The fourth proportional to 31,962.32, 47,962.80 and 13,242.80 is: 19,872.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,962.32 : 47,962.80 = 13,242.80 : x
  2. Step 2: Convert to fraction form
    31,962.32/47,962.80 = 13,242.80/x
  3. Step 3: Cross multiply
    31,962.32x = 47,962.80 × 13,242.80
  4. Step 4: Simplify right side
    31,962.32x = 635,161,767.84
  5. Step 5: Solve for x
    x = 635,161,767.84/31,962.32
  6. Step 6: Final answer
    x = 19,872.20

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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.