Home / 12,858.94-19,287.12-9,126.64

Finding the Fourth Proportional to 12,858.94, 19,287.12 and 9,126.64

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Solution

The fourth proportional to 12,858.94, 19,287.12 and 9,126.64 is: 13,689.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,858.94 : 19,287.12 = 9,126.64 : x
  2. Step 2: Convert to fraction form
    12,858.94/19,287.12 = 9,126.64/x
  3. Step 3: Cross multiply
    12,858.94x = 19,287.12 × 9,126.64
  4. Step 4: Simplify right side
    12,858.94x = 176,026,600.88
  5. Step 5: Solve for x
    x = 176,026,600.88/12,858.94
  6. Step 6: Final answer
    x = 13,689.04

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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.