Home / 12,889.12-19,350-10,724.32

Finding the Fourth Proportional to 12,889.12, 19,350 and 10,724.32

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Solution

The fourth proportional to 12,889.12, 19,350 and 10,724.32 is: 16,100.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.12 : 19,350 = 10,724.32 : x
  2. Step 2: Convert to fraction form
    12,889.12/19,350 = 10,724.32/x
  3. Step 3: Cross multiply
    12,889.12x = 19,350 × 10,724.32
  4. Step 4: Simplify right side
    12,889.12x = 207,515,592
  5. Step 5: Solve for x
    x = 207,515,592/12,889.12
  6. Step 6: Final answer
    x = 16,100.06

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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.