Home / 11,136.64-15,378.90-8,337.28

Finding the Fourth Proportional to 11,136.64, 15,378.90 and 8,337.28

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Solution

The fourth proportional to 11,136.64, 15,378.90 and 8,337.28 is: 11,513.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,136.64 : 15,378.90 = 8,337.28 : x
  2. Step 2: Convert to fraction form
    11,136.64/15,378.90 = 8,337.28/x
  3. Step 3: Cross multiply
    11,136.64x = 15,378.90 × 8,337.28
  4. Step 4: Simplify right side
    11,136.64x = 128,218,195.39
  5. Step 5: Solve for x
    x = 128,218,195.39/11,136.64
  6. Step 6: Final answer
    x = 11,513.18

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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.