Home / 10,113.52-15,161.62-6,643.12

Finding the Fourth Proportional to 10,113.52, 15,161.62 and 6,643.12

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Solution

The fourth proportional to 10,113.52, 15,161.62 and 6,643.12 is: 9,958.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,113.52 : 15,161.62 = 6,643.12 : x
  2. Step 2: Convert to fraction form
    10,113.52/15,161.62 = 6,643.12/x
  3. Step 3: Cross multiply
    10,113.52x = 15,161.62 × 6,643.12
  4. Step 4: Simplify right side
    10,113.52x = 100,720,461.05
  5. Step 5: Solve for x
    x = 100,720,461.05/10,113.52
  6. Step 6: Final answer
    x = 9,958.99

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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.