Home / 10,140.15-15,186.72-9,789.84

Finding the Fourth Proportional to 10,140.15, 15,186.72 and 9,789.84

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Solution

The fourth proportional to 10,140.15, 15,186.72 and 9,789.84 is: 14,662.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,140.15 : 15,186.72 = 9,789.84 : x
  2. Step 2: Convert to fraction form
    10,140.15/15,186.72 = 9,789.84/x
  3. Step 3: Cross multiply
    10,140.15x = 15,186.72 × 9,789.84
  4. Step 4: Simplify right side
    10,140.15x = 148,675,558.92
  5. Step 5: Solve for x
    x = 148,675,558.92/10,140.15
  6. Step 6: Final answer
    x = 14,662.07

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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.