Home / 13,155.48-19,719.43-6,129.70

Finding the Fourth Proportional to 13,155.48, 19,719.43 and 6,129.70

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Solution

The fourth proportional to 13,155.48, 19,719.43 and 6,129.70 is: 9,188.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,155.48 : 19,719.43 = 6,129.70 : x
  2. Step 2: Convert to fraction form
    13,155.48/19,719.43 = 6,129.70/x
  3. Step 3: Cross multiply
    13,155.48x = 19,719.43 × 6,129.70
  4. Step 4: Simplify right side
    13,155.48x = 120,874,184.16
  5. Step 5: Solve for x
    x = 120,874,184.16/13,155.48
  6. Step 6: Final answer
    x = 9,188.13

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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.