Home / 18,937.70-26,136.27-11,387.89

Finding the Fourth Proportional to 18,937.70, 26,136.27 and 11,387.89

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Solution

The fourth proportional to 18,937.70, 26,136.27 and 11,387.89 is: 15,716.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,937.70 : 26,136.27 = 11,387.89 : x
  2. Step 2: Convert to fraction form
    18,937.70/26,136.27 = 11,387.89/x
  3. Step 3: Cross multiply
    18,937.70x = 26,136.27 × 11,387.89
  4. Step 4: Simplify right side
    18,937.70x = 297,637,000.44
  5. Step 5: Solve for x
    x = 297,637,000.44/18,937.70
  6. Step 6: Final answer
    x = 15,716.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.