Home / 10,640.32-15,921.60-6,259.84

Finding the Fourth Proportional to 10,640.32, 15,921.60 and 6,259.84

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Solution

The fourth proportional to 10,640.32, 15,921.60 and 6,259.84 is: 9,366.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,640.32 : 15,921.60 = 6,259.84 : x
  2. Step 2: Convert to fraction form
    10,640.32/15,921.60 = 6,259.84/x
  3. Step 3: Cross multiply
    10,640.32x = 15,921.60 × 6,259.84
  4. Step 4: Simplify right side
    10,640.32x = 99,666,668.54
  5. Step 5: Solve for x
    x = 99,666,668.54/10,640.32
  6. Step 6: Final answer
    x = 9,366.89

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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.