Home / 28,152.78-38,851.11-15,577.50

Finding the Fourth Proportional to 28,152.78, 38,851.11 and 15,577.50

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Solution

The fourth proportional to 28,152.78, 38,851.11 and 15,577.50 is: 21,497.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,152.78 : 38,851.11 = 15,577.50 : x
  2. Step 2: Convert to fraction form
    28,152.78/38,851.11 = 15,577.50/x
  3. Step 3: Cross multiply
    28,152.78x = 38,851.11 × 15,577.50
  4. Step 4: Simplify right side
    28,152.78x = 605,203,166.03
  5. Step 5: Solve for x
    x = 605,203,166.03/28,152.78
  6. Step 6: Final answer
    x = 21,497.10

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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.