Home / 31,985.63-47,964.54-16,989.45

Finding the Fourth Proportional to 31,985.63, 47,964.54 and 16,989.45

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Solution

The fourth proportional to 31,985.63, 47,964.54 and 16,989.45 is: 25,476.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,985.63 : 47,964.54 = 16,989.45 : x
  2. Step 2: Convert to fraction form
    31,985.63/47,964.54 = 16,989.45/x
  3. Step 3: Cross multiply
    31,985.63x = 47,964.54 × 16,989.45
  4. Step 4: Simplify right side
    31,985.63x = 814,891,014.05
  5. Step 5: Solve for x
    x = 814,891,014.05/31,985.63
  6. Step 6: Final answer
    x = 25,476.78

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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.