Home / 14,631.13-20,190.82-7,916.61

Finding the Fourth Proportional to 14,631.13, 20,190.82 and 7,916.61

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Solution

The fourth proportional to 14,631.13, 20,190.82 and 7,916.61 is: 10,924.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,631.13 : 20,190.82 = 7,916.61 : x
  2. Step 2: Convert to fraction form
    14,631.13/20,190.82 = 7,916.61/x
  3. Step 3: Cross multiply
    14,631.13x = 20,190.82 × 7,916.61
  4. Step 4: Simplify right side
    14,631.13x = 159,842,940.55
  5. Step 5: Solve for x
    x = 159,842,940.55/14,631.13
  6. Step 6: Final answer
    x = 10,924.85

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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.