Home / 26,943.09-40,435.70-18,681.30

Finding the Fourth Proportional to 26,943.09, 40,435.70 and 18,681.30

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Solution

The fourth proportional to 26,943.09, 40,435.70 and 18,681.30 is: 28,036.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,943.09 : 40,435.70 = 18,681.30 : x
  2. Step 2: Convert to fraction form
    26,943.09/40,435.70 = 18,681.30/x
  3. Step 3: Cross multiply
    26,943.09x = 40,435.70 × 18,681.30
  4. Step 4: Simplify right side
    26,943.09x = 755,391,349.00
  5. Step 5: Solve for x
    x = 755,391,349.00/26,943.09
  6. Step 6: Final answer
    x = 28,036.55

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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.