Home / 28,142.22-42,219.22-10,611.92

Finding the Fourth Proportional to 28,142.22, 42,219.22 and 10,611.92

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Solution

The fourth proportional to 28,142.22, 42,219.22 and 10,611.92 is: 15,920.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,142.22 : 42,219.22 = 10,611.92 : x
  2. Step 2: Convert to fraction form
    28,142.22/42,219.22 = 10,611.92/x
  3. Step 3: Cross multiply
    28,142.22x = 42,219.22 × 10,611.92
  4. Step 4: Simplify right side
    28,142.22x = 448,026,985.10
  5. Step 5: Solve for x
    x = 448,026,985.10/28,142.22
  6. Step 6: Final answer
    x = 15,920.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.