Home / 15,160.70-20,921.46-8,446.31

Finding the Fourth Proportional to 15,160.70, 20,921.46 and 8,446.31

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Solution

The fourth proportional to 15,160.70, 20,921.46 and 8,446.31 is: 11,655.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,160.70 : 20,921.46 = 8,446.31 : x
  2. Step 2: Convert to fraction form
    15,160.70/20,921.46 = 8,446.31/x
  3. Step 3: Cross multiply
    15,160.70x = 20,921.46 × 8,446.31
  4. Step 4: Simplify right side
    15,160.70x = 176,709,136.81
  5. Step 5: Solve for x
    x = 176,709,136.81/15,160.70
  6. Step 6: Final answer
    x = 11,655.74

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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.