Home / 11,113.08-15,339.48-6,400.56

Finding the Fourth Proportional to 11,113.08, 15,339.48 and 6,400.56

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Solution

The fourth proportional to 11,113.08, 15,339.48 and 6,400.56 is: 8,834.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,113.08 : 15,339.48 = 6,400.56 : x
  2. Step 2: Convert to fraction form
    11,113.08/15,339.48 = 6,400.56/x
  3. Step 3: Cross multiply
    11,113.08x = 15,339.48 × 6,400.56
  4. Step 4: Simplify right side
    11,113.08x = 98,181,262.11
  5. Step 5: Solve for x
    x = 98,181,262.11/11,113.08
  6. Step 6: Final answer
    x = 8,834.75

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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.