Home / 31,990.24-47,985.36-11,208.88

Finding the Fourth Proportional to 31,990.24, 47,985.36 and 11,208.88

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Solution

The fourth proportional to 31,990.24, 47,985.36 and 11,208.88 is: 16,813.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,990.24 : 47,985.36 = 11,208.88 : x
  2. Step 2: Convert to fraction form
    31,990.24/47,985.36 = 11,208.88/x
  3. Step 3: Cross multiply
    31,990.24x = 47,985.36 × 11,208.88
  4. Step 4: Simplify right side
    31,990.24x = 537,862,142.00
  5. Step 5: Solve for x
    x = 537,862,142.00/31,990.24
  6. Step 6: Final answer
    x = 16,813.32

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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.