Home / 11,505.10-15,872.88-7,528.48

Finding the Fourth Proportional to 11,505.10, 15,872.88 and 7,528.48

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Solution

The fourth proportional to 11,505.10, 15,872.88 and 7,528.48 is: 10,386.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,505.10 : 15,872.88 = 7,528.48 : x
  2. Step 2: Convert to fraction form
    11,505.10/15,872.88 = 7,528.48/x
  3. Step 3: Cross multiply
    11,505.10x = 15,872.88 × 7,528.48
  4. Step 4: Simplify right side
    11,505.10x = 119,498,659.62
  5. Step 5: Solve for x
    x = 119,498,659.62/11,505.10
  6. Step 6: Final answer
    x = 10,386.58

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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.