Home / 26,479.93-39,659.41-12,638.65

Finding the Fourth Proportional to 26,479.93, 39,659.41 and 12,638.65

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Solution

The fourth proportional to 26,479.93, 39,659.41 and 12,638.65 is: 18,929.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,479.93 : 39,659.41 = 12,638.65 : x
  2. Step 2: Convert to fraction form
    26,479.93/39,659.41 = 12,638.65/x
  3. Step 3: Cross multiply
    26,479.93x = 39,659.41 × 12,638.65
  4. Step 4: Simplify right side
    26,479.93x = 501,241,402.20
  5. Step 5: Solve for x
    x = 501,241,402.20/26,479.93
  6. Step 6: Final answer
    x = 18,929.11

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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.