Home / 13,141.10-19,711.65-5,345.90

Finding the Fourth Proportional to 13,141.10, 19,711.65 and 5,345.90

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Solution

The fourth proportional to 13,141.10, 19,711.65 and 5,345.90 is: 8,018.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.10 : 19,711.65 = 5,345.90 : x
  2. Step 2: Convert to fraction form
    13,141.10/19,711.65 = 5,345.90/x
  3. Step 3: Cross multiply
    13,141.10x = 19,711.65 × 5,345.90
  4. Step 4: Simplify right side
    13,141.10x = 105,376,509.74
  5. Step 5: Solve for x
    x = 105,376,509.74/13,141.10
  6. Step 6: Final answer
    x = 8,018.85

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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.