Home / 18,936.72-26,132.86-10,439.16

Finding the Fourth Proportional to 18,936.72, 26,132.86 and 10,439.16

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Solution

The fourth proportional to 18,936.72, 26,132.86 and 10,439.16 is: 14,406.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.72 : 26,132.86 = 10,439.16 : x
  2. Step 2: Convert to fraction form
    18,936.72/26,132.86 = 10,439.16/x
  3. Step 3: Cross multiply
    18,936.72x = 26,132.86 × 10,439.16
  4. Step 4: Simplify right side
    18,936.72x = 272,805,106.80
  5. Step 5: Solve for x
    x = 272,805,106.80/18,936.72
  6. Step 6: Final answer
    x = 14,406.14

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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.