Home / 15,156.42-20,916.22-8,442.50

Finding the Fourth Proportional to 15,156.42, 20,916.22 and 8,442.50

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Solution

The fourth proportional to 15,156.42, 20,916.22 and 8,442.50 is: 11,650.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,156.42 : 20,916.22 = 8,442.50 : x
  2. Step 2: Convert to fraction form
    15,156.42/20,916.22 = 8,442.50/x
  3. Step 3: Cross multiply
    15,156.42x = 20,916.22 × 8,442.50
  4. Step 4: Simplify right side
    15,156.42x = 176,585,187.35
  5. Step 5: Solve for x
    x = 176,585,187.35/15,156.42
  6. Step 6: Final answer
    x = 11,650.85

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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.