Home / 34,788.18-47,985.84-20,631

Finding the Fourth Proportional to 34,788.18, 47,985.84 and 20,631

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Solution

The fourth proportional to 34,788.18, 47,985.84 and 20,631 is: 28,457.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,788.18 : 47,985.84 = 20,631 : x
  2. Step 2: Convert to fraction form
    34,788.18/47,985.84 = 20,631/x
  3. Step 3: Cross multiply
    34,788.18x = 47,985.84 × 20,631
  4. Step 4: Simplify right side
    34,788.18x = 989,995,865.04
  5. Step 5: Solve for x
    x = 989,995,865.04/34,788.18
  6. Step 6: Final answer
    x = 28,457.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.