Home / 10,128.19-15,199.97-7,029.91

Finding the Fourth Proportional to 10,128.19, 15,199.97 and 7,029.91

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Solution

The fourth proportional to 10,128.19, 15,199.97 and 7,029.91 is: 10,550.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,128.19 : 15,199.97 = 7,029.91 : x
  2. Step 2: Convert to fraction form
    10,128.19/15,199.97 = 7,029.91/x
  3. Step 3: Cross multiply
    10,128.19x = 15,199.97 × 7,029.91
  4. Step 4: Simplify right side
    10,128.19x = 106,854,421.10
  5. Step 5: Solve for x
    x = 106,854,421.10/10,128.19
  6. Step 6: Final answer
    x = 10,550.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.