Home / 15,244.84-20,991.15-13,345.80

Finding the Fourth Proportional to 15,244.84, 20,991.15 and 13,345.80

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Solution

The fourth proportional to 15,244.84, 20,991.15 and 13,345.80 is: 18,376.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,244.84 : 20,991.15 = 13,345.80 : x
  2. Step 2: Convert to fraction form
    15,244.84/20,991.15 = 13,345.80/x
  3. Step 3: Cross multiply
    15,244.84x = 20,991.15 × 13,345.80
  4. Step 4: Simplify right side
    15,244.84x = 280,143,687.24
  5. Step 5: Solve for x
    x = 280,143,687.24/15,244.84
  6. Step 6: Final answer
    x = 18,376.29

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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.