Home / 28,074.96-38,743.92-15,328.80

Finding the Fourth Proportional to 28,074.96, 38,743.92 and 15,328.80

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Solution

The fourth proportional to 28,074.96, 38,743.92 and 15,328.80 is: 21,154.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,074.96 : 38,743.92 = 15,328.80 : x
  2. Step 2: Convert to fraction form
    28,074.96/38,743.92 = 15,328.80/x
  3. Step 3: Cross multiply
    28,074.96x = 38,743.92 × 15,328.80
  4. Step 4: Simplify right side
    28,074.96x = 593,897,800.90
  5. Step 5: Solve for x
    x = 593,897,800.90/28,074.96
  6. Step 6: Final answer
    x = 21,154.00

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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.