Home / 12,872.21-19,295.15-8,712.63

Finding the Fourth Proportional to 12,872.21, 19,295.15 and 8,712.63

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Solution

The fourth proportional to 12,872.21, 19,295.15 and 8,712.63 is: 13,060.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,872.21 : 19,295.15 = 8,712.63 : x
  2. Step 2: Convert to fraction form
    12,872.21/19,295.15 = 8,712.63/x
  3. Step 3: Cross multiply
    12,872.21x = 19,295.15 × 8,712.63
  4. Step 4: Simplify right side
    12,872.21x = 168,111,459.18
  5. Step 5: Solve for x
    x = 168,111,459.18/12,872.21
  6. Step 6: Final answer
    x = 13,060.04

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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.