Home / 11,140.24-15,369.76-6,424.40

Finding the Fourth Proportional to 11,140.24, 15,369.76 and 6,424.40

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Solution

The fourth proportional to 11,140.24, 15,369.76 and 6,424.40 is: 8,863.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,140.24 : 15,369.76 = 6,424.40 : x
  2. Step 2: Convert to fraction form
    11,140.24/15,369.76 = 6,424.40/x
  3. Step 3: Cross multiply
    11,140.24x = 15,369.76 × 6,424.40
  4. Step 4: Simplify right side
    11,140.24x = 98,741,486.14
  5. Step 5: Solve for x
    x = 98,741,486.14/11,140.24
  6. Step 6: Final answer
    x = 8,863.50

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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.