Home / 28,069.89-38,739.11-16,140.21

Finding the Fourth Proportional to 28,069.89, 38,739.11 and 16,140.21

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Solution

The fourth proportional to 28,069.89, 38,739.11 and 16,140.21 is: 22,275.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,069.89 : 38,739.11 = 16,140.21 : x
  2. Step 2: Convert to fraction form
    28,069.89/38,739.11 = 16,140.21/x
  3. Step 3: Cross multiply
    28,069.89x = 38,739.11 × 16,140.21
  4. Step 4: Simplify right side
    28,069.89x = 625,257,289.91
  5. Step 5: Solve for x
    x = 625,257,289.91/28,069.89
  6. Step 6: Final answer
    x = 22,275.02

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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.