Home / 15,310.05-21,079.54-13,908.65

Finding the Fourth Proportional to 15,310.05, 21,079.54 and 13,908.65

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Solution

The fourth proportional to 15,310.05, 21,079.54 and 13,908.65 is: 19,150.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,310.05 : 21,079.54 = 13,908.65 : x
  2. Step 2: Convert to fraction form
    15,310.05/21,079.54 = 13,908.65/x
  3. Step 3: Cross multiply
    15,310.05x = 21,079.54 × 13,908.65
  4. Step 4: Simplify right side
    15,310.05x = 293,187,856.01
  5. Step 5: Solve for x
    x = 293,187,856.01/15,310.05
  6. Step 6: Final answer
    x = 19,150.03

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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.