Home / 12,897.59-19,321.67-8,730.41

Finding the Fourth Proportional to 12,897.59, 19,321.67 and 8,730.41

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Solution

The fourth proportional to 12,897.59, 19,321.67 and 8,730.41 is: 13,078.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,897.59 : 19,321.67 = 8,730.41 : x
  2. Step 2: Convert to fraction form
    12,897.59/19,321.67 = 8,730.41/x
  3. Step 3: Cross multiply
    12,897.59x = 19,321.67 × 8,730.41
  4. Step 4: Simplify right side
    12,897.59x = 168,686,026.20
  5. Step 5: Solve for x
    x = 168,686,026.20/12,897.59
  6. Step 6: Final answer
    x = 13,078.88

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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.