Home / 27,858.12-38,439.46-18,423.24

Finding the Fourth Proportional to 27,858.12, 38,439.46 and 18,423.24

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Solution

The fourth proportional to 27,858.12, 38,439.46 and 18,423.24 is: 25,420.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,858.12 : 38,439.46 = 18,423.24 : x
  2. Step 2: Convert to fraction form
    27,858.12/38,439.46 = 18,423.24/x
  3. Step 3: Cross multiply
    27,858.12x = 38,439.46 × 18,423.24
  4. Step 4: Simplify right side
    27,858.12x = 708,179,397.05
  5. Step 5: Solve for x
    x = 708,179,397.05/27,858.12
  6. Step 6: Final answer
    x = 25,420.93

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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.