Home / 27,870.64-38,493.42-18,353.07

Finding the Fourth Proportional to 27,870.64, 38,493.42 and 18,353.07

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Solution

The fourth proportional to 27,870.64, 38,493.42 and 18,353.07 is: 25,348.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,870.64 : 38,493.42 = 18,353.07 : x
  2. Step 2: Convert to fraction form
    27,870.64/38,493.42 = 18,353.07/x
  3. Step 3: Cross multiply
    27,870.64x = 38,493.42 × 18,353.07
  4. Step 4: Simplify right side
    27,870.64x = 706,472,431.80
  5. Step 5: Solve for x
    x = 706,472,431.80/27,870.64
  6. Step 6: Final answer
    x = 25,348.27

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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.