Home / 10,985.87-15,160.75-6,449.83

Finding the Fourth Proportional to 10,985.87, 15,160.75 and 6,449.83

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Solution

The fourth proportional to 10,985.87, 15,160.75 and 6,449.83 is: 8,900.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,985.87 : 15,160.75 = 6,449.83 : x
  2. Step 2: Convert to fraction form
    10,985.87/15,160.75 = 6,449.83/x
  3. Step 3: Cross multiply
    10,985.87x = 15,160.75 × 6,449.83
  4. Step 4: Simplify right side
    10,985.87x = 97,784,298.07
  5. Step 5: Solve for x
    x = 97,784,298.07/10,985.87
  6. Step 6: Final answer
    x = 8,900.92

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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.