Home / 28,147.88-38,828.71-18,077.85

Finding the Fourth Proportional to 28,147.88, 38,828.71 and 18,077.85

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Solution

The fourth proportional to 28,147.88, 38,828.71 and 18,077.85 is: 24,937.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147.88 : 38,828.71 = 18,077.85 : x
  2. Step 2: Convert to fraction form
    28,147.88/38,828.71 = 18,077.85/x
  3. Step 3: Cross multiply
    28,147.88x = 38,828.71 × 18,077.85
  4. Step 4: Simplify right side
    28,147.88x = 701,939,549.88
  5. Step 5: Solve for x
    x = 701,939,549.88/28,147.88
  6. Step 6: Final answer
    x = 24,937.57

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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.