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Finding the Fourth Proportional to 26,647.88, 36,769.88 and 15,315.19

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Solution

The fourth proportional to 26,647.88, 36,769.88 and 15,315.19 is: 21,132.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,647.88 : 36,769.88 = 15,315.19 : x
  2. Step 2: Convert to fraction form
    26,647.88/36,769.88 = 15,315.19/x
  3. Step 3: Cross multiply
    26,647.88x = 36,769.88 × 15,315.19
  4. Step 4: Simplify right side
    26,647.88x = 563,137,644.84
  5. Step 5: Solve for x
    x = 563,137,644.84/26,647.88
  6. Step 6: Final answer
    x = 21,132.55

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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.