Home / 10,388.64-15,555.61-6,218.76

Finding the Fourth Proportional to 10,388.64, 15,555.61 and 6,218.76

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Solution

The fourth proportional to 10,388.64, 15,555.61 and 6,218.76 is: 9,311.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,388.64 : 15,555.61 = 6,218.76 : x
  2. Step 2: Convert to fraction form
    10,388.64/15,555.61 = 6,218.76/x
  3. Step 3: Cross multiply
    10,388.64x = 15,555.61 × 6,218.76
  4. Step 4: Simplify right side
    10,388.64x = 96,736,605.24
  5. Step 5: Solve for x
    x = 96,736,605.24/10,388.64
  6. Step 6: Final answer
    x = 9,311.77

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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.