Home / 11,156.70-15,384.23-8,472.87

Finding the Fourth Proportional to 11,156.70, 15,384.23 and 8,472.87

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Solution

The fourth proportional to 11,156.70, 15,384.23 and 8,472.87 is: 11,683.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,156.70 : 15,384.23 = 8,472.87 : x
  2. Step 2: Convert to fraction form
    11,156.70/15,384.23 = 8,472.87/x
  3. Step 3: Cross multiply
    11,156.70x = 15,384.23 × 8,472.87
  4. Step 4: Simplify right side
    11,156.70x = 130,348,570.25
  5. Step 5: Solve for x
    x = 130,348,570.25/11,156.70
  6. Step 6: Final answer
    x = 11,683.43

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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.