Home / 31,820.49-47,750.45-18,499.76

Finding the Fourth Proportional to 31,820.49, 47,750.45 and 18,499.76

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Solution

The fourth proportional to 31,820.49, 47,750.45 and 18,499.76 is: 27,761.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,820.49 : 47,750.45 = 18,499.76 : x
  2. Step 2: Convert to fraction form
    31,820.49/47,750.45 = 18,499.76/x
  3. Step 3: Cross multiply
    31,820.49x = 47,750.45 × 18,499.76
  4. Step 4: Simplify right side
    31,820.49x = 883,371,603.02
  5. Step 5: Solve for x
    x = 883,371,603.02/31,820.49
  6. Step 6: Final answer
    x = 27,761.09

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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.