Home / 26,619.40-39,929.10-12,574.81

Finding the Fourth Proportional to 26,619.40, 39,929.10 and 12,574.81

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Solution

The fourth proportional to 26,619.40, 39,929.10 and 12,574.81 is: 18,862.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,619.40 : 39,929.10 = 12,574.81 : x
  2. Step 2: Convert to fraction form
    26,619.40/39,929.10 = 12,574.81/x
  3. Step 3: Cross multiply
    26,619.40x = 39,929.10 × 12,574.81
  4. Step 4: Simplify right side
    26,619.40x = 502,100,845.97
  5. Step 5: Solve for x
    x = 502,100,845.97/26,619.40
  6. Step 6: Final answer
    x = 18,862.22

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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.