Home / 10,985.15-15,157.85-6,675.99

Finding the Fourth Proportional to 10,985.15, 15,157.85 and 6,675.99

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Solution

The fourth proportional to 10,985.15, 15,157.85 and 6,675.99 is: 9,211.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,985.15 : 15,157.85 = 6,675.99 : x
  2. Step 2: Convert to fraction form
    10,985.15/15,157.85 = 6,675.99/x
  3. Step 3: Cross multiply
    10,985.15x = 15,157.85 × 6,675.99
  4. Step 4: Simplify right side
    10,985.15x = 101,193,621.64
  5. Step 5: Solve for x
    x = 101,193,621.64/10,985.15
  6. Step 6: Final answer
    x = 9,211.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.