Home / 13,109.65-19,666.40-4,342.61

Finding the Fourth Proportional to 13,109.65, 19,666.40 and 4,342.61

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Solution

The fourth proportional to 13,109.65, 19,666.40 and 4,342.61 is: 6,514.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,109.65 : 19,666.40 = 4,342.61 : x
  2. Step 2: Convert to fraction form
    13,109.65/19,666.40 = 4,342.61/x
  3. Step 3: Cross multiply
    13,109.65x = 19,666.40 × 4,342.61
  4. Step 4: Simplify right side
    13,109.65x = 85,403,532.76
  5. Step 5: Solve for x
    x = 85,403,532.76/13,109.65
  6. Step 6: Final answer
    x = 6,514.56

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1.5x scale

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.