Home / 34,340.18-47,395.19-20,916.65

Finding the Fourth Proportional to 34,340.18, 47,395.19 and 20,916.65

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Solution

The fourth proportional to 34,340.18, 47,395.19 and 20,916.65 is: 28,868.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,340.18 : 47,395.19 = 20,916.65 : x
  2. Step 2: Convert to fraction form
    34,340.18/47,395.19 = 20,916.65/x
  3. Step 3: Cross multiply
    34,340.18x = 47,395.19 × 20,916.65
  4. Step 4: Simplify right side
    34,340.18x = 991,348,771.69
  5. Step 5: Solve for x
    x = 991,348,771.69/34,340.18
  6. Step 6: Final answer
    x = 28,868.48

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1.5x scale

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.