Home / 27,995.50-38,634.60-15,421.06

Finding the Fourth Proportional to 27,995.50, 38,634.60 and 15,421.06

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Solution

The fourth proportional to 27,995.50, 38,634.60 and 15,421.06 is: 21,281.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,995.50 : 38,634.60 = 15,421.06 : x
  2. Step 2: Convert to fraction form
    27,995.50/38,634.60 = 15,421.06/x
  3. Step 3: Cross multiply
    27,995.50x = 38,634.60 × 15,421.06
  4. Step 4: Simplify right side
    27,995.50x = 595,786,484.68
  5. Step 5: Solve for x
    x = 595,786,484.68/27,995.50
  6. Step 6: Final answer
    x = 21,281.51

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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.