Home / 27,854.02-38,438.94-15,278.50

Finding the Fourth Proportional to 27,854.02, 38,438.94 and 15,278.50

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Solution

The fourth proportional to 27,854.02, 38,438.94 and 15,278.50 is: 21,084.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,854.02 : 38,438.94 = 15,278.50 : x
  2. Step 2: Convert to fraction form
    27,854.02/38,438.94 = 15,278.50/x
  3. Step 3: Cross multiply
    27,854.02x = 38,438.94 × 15,278.50
  4. Step 4: Simplify right side
    27,854.02x = 587,289,344.79
  5. Step 5: Solve for x
    x = 587,289,344.79/27,854.02
  6. Step 6: Final answer
    x = 21,084.55

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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.