Home / 12,938.92-17,862.50-8,712.20

Finding the Fourth Proportional to 12,938.92, 17,862.50 and 8,712.20

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Solution

The fourth proportional to 12,938.92, 17,862.50 and 8,712.20 is: 12,027.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.92 : 17,862.50 = 8,712.20 : x
  2. Step 2: Convert to fraction form
    12,938.92/17,862.50 = 8,712.20/x
  3. Step 3: Cross multiply
    12,938.92x = 17,862.50 × 8,712.20
  4. Step 4: Simplify right side
    12,938.92x = 155,621,672.50
  5. Step 5: Solve for x
    x = 155,621,672.50/12,938.92
  6. Step 6: Final answer
    x = 12,027.41

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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.