Home / 10,157.30-15,229.80-6,643.07

Finding the Fourth Proportional to 10,157.30, 15,229.80 and 6,643.07

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Solution

The fourth proportional to 10,157.30, 15,229.80 and 6,643.07 is: 9,960.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,157.30 : 15,229.80 = 6,643.07 : x
  2. Step 2: Convert to fraction form
    10,157.30/15,229.80 = 6,643.07/x
  3. Step 3: Cross multiply
    10,157.30x = 15,229.80 × 6,643.07
  4. Step 4: Simplify right side
    10,157.30x = 101,172,551.34
  5. Step 5: Solve for x
    x = 101,172,551.34/10,157.30
  6. Step 6: Final answer
    x = 9,960.58

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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.