Home / 26,619.90-39,929.85-12,575.31

Finding the Fourth Proportional to 26,619.90, 39,929.85 and 12,575.31

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Solution

The fourth proportional to 26,619.90, 39,929.85 and 12,575.31 is: 18,862.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,619.90 : 39,929.85 = 12,575.31 : x
  2. Step 2: Convert to fraction form
    26,619.90/39,929.85 = 12,575.31/x
  3. Step 3: Cross multiply
    26,619.90x = 39,929.85 × 12,575.31
  4. Step 4: Simplify right side
    26,619.90x = 502,130,242.00
  5. Step 5: Solve for x
    x = 502,130,242.00/26,619.90
  6. Step 6: Final answer
    x = 18,862.97

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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.