Home / 28,072.28-38,740.20-15,497.12

Finding the Fourth Proportional to 28,072.28, 38,740.20 and 15,497.12

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Solution

The fourth proportional to 28,072.28, 38,740.20 and 15,497.12 is: 21,386.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,072.28 : 38,740.20 = 15,497.12 : x
  2. Step 2: Convert to fraction form
    28,072.28/38,740.20 = 15,497.12/x
  3. Step 3: Cross multiply
    28,072.28x = 38,740.20 × 15,497.12
  4. Step 4: Simplify right side
    28,072.28x = 600,361,528.22
  5. Step 5: Solve for x
    x = 600,361,528.22/28,072.28
  6. Step 6: Final answer
    x = 21,386.28

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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.