Home / 11,129.16-15,357.24-6,412.80

Finding the Fourth Proportional to 11,129.16, 15,357.24 and 6,412.80

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Solution

The fourth proportional to 11,129.16, 15,357.24 and 6,412.80 is: 8,849.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.16 : 15,357.24 = 6,412.80 : x
  2. Step 2: Convert to fraction form
    11,129.16/15,357.24 = 6,412.80/x
  3. Step 3: Cross multiply
    11,129.16x = 15,357.24 × 6,412.80
  4. Step 4: Simplify right side
    11,129.16x = 98,482,908.67
  5. Step 5: Solve for x
    x = 98,482,908.67/11,129.16
  6. Step 6: Final answer
    x = 8,849.09

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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.