Home / 11,149.70-15,389.88-6,437.12

Finding the Fourth Proportional to 11,149.70, 15,389.88 and 6,437.12

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Solution

The fourth proportional to 11,149.70, 15,389.88 and 6,437.12 is: 8,885.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,149.70 : 15,389.88 = 6,437.12 : x
  2. Step 2: Convert to fraction form
    11,149.70/15,389.88 = 6,437.12/x
  3. Step 3: Cross multiply
    11,149.70x = 15,389.88 × 6,437.12
  4. Step 4: Simplify right side
    11,149.70x = 99,066,504.35
  5. Step 5: Solve for x
    x = 99,066,504.35/11,149.70
  6. Step 6: Final answer
    x = 8,885.13

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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.