Home / 31,615.49-47,422.35-12,895.44

Finding the Fourth Proportional to 31,615.49, 47,422.35 and 12,895.44

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Solution

The fourth proportional to 31,615.49, 47,422.35 and 12,895.44 is: 19,342.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,615.49 : 47,422.35 = 12,895.44 : x
  2. Step 2: Convert to fraction form
    31,615.49/47,422.35 = 12,895.44/x
  3. Step 3: Cross multiply
    31,615.49x = 47,422.35 × 12,895.44
  4. Step 4: Simplify right side
    31,615.49x = 611,532,069.08
  5. Step 5: Solve for x
    x = 611,532,069.08/31,615.49
  6. Step 6: Final answer
    x = 19,342.80

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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.