Home / 27,685.24-38,205.60-15,109.98

Finding the Fourth Proportional to 27,685.24, 38,205.60 and 15,109.98

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Solution

The fourth proportional to 27,685.24, 38,205.60 and 15,109.98 is: 20,851.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,685.24 : 38,205.60 = 15,109.98 : x
  2. Step 2: Convert to fraction form
    27,685.24/38,205.60 = 15,109.98/x
  3. Step 3: Cross multiply
    27,685.24x = 38,205.60 × 15,109.98
  4. Step 4: Simplify right side
    27,685.24x = 577,285,851.89
  5. Step 5: Solve for x
    x = 577,285,851.89/27,685.24
  6. Step 6: Final answer
    x = 20,851.76

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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.