Home / 34,758.10-47,972.82-20,618.74

Finding the Fourth Proportional to 34,758.10, 47,972.82 and 20,618.74

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Solution

The fourth proportional to 34,758.10, 47,972.82 and 20,618.74 is: 28,457.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,758.10 : 47,972.82 = 20,618.74 : x
  2. Step 2: Convert to fraction form
    34,758.10/47,972.82 = 20,618.74/x
  3. Step 3: Cross multiply
    34,758.10x = 47,972.82 × 20,618.74
  4. Step 4: Simplify right side
    34,758.10x = 989,139,102.65
  5. Step 5: Solve for x
    x = 989,139,102.65/34,758.10
  6. Step 6: Final answer
    x = 28,457.80

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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.