Home / 28,271.92-42,407.88-12,685.36

Finding the Fourth Proportional to 28,271.92, 42,407.88 and 12,685.36

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Solution

The fourth proportional to 28,271.92, 42,407.88 and 12,685.36 is: 19,028.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,271.92 : 42,407.88 = 12,685.36 : x
  2. Step 2: Convert to fraction form
    28,271.92/42,407.88 = 12,685.36/x
  3. Step 3: Cross multiply
    28,271.92x = 42,407.88 × 12,685.36
  4. Step 4: Simplify right side
    28,271.92x = 537,959,224.64
  5. Step 5: Solve for x
    x = 537,959,224.64/28,271.92
  6. Step 6: Final answer
    x = 19,028.04

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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.