Home / 31,611.98-47,418.02-12,902.20

Finding the Fourth Proportional to 31,611.98, 47,418.02 and 12,902.20

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Solution

The fourth proportional to 31,611.98, 47,418.02 and 12,902.20 is: 19,353.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,611.98 : 47,418.02 = 12,902.20 : x
  2. Step 2: Convert to fraction form
    31,611.98/47,418.02 = 12,902.20/x
  3. Step 3: Cross multiply
    31,611.98x = 47,418.02 × 12,902.20
  4. Step 4: Simplify right side
    31,611.98x = 611,796,777.64
  5. Step 5: Solve for x
    x = 611,796,777.64/31,611.98
  6. Step 6: Final answer
    x = 19,353.32

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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.