Home / 11,121.10-15,345.08-6,340.84

Finding the Fourth Proportional to 11,121.10, 15,345.08 and 6,340.84

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Solution

The fourth proportional to 11,121.10, 15,345.08 and 6,340.84 is: 8,749.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.10 : 15,345.08 = 6,340.84 : x
  2. Step 2: Convert to fraction form
    11,121.10/15,345.08 = 6,340.84/x
  3. Step 3: Cross multiply
    11,121.10x = 15,345.08 × 6,340.84
  4. Step 4: Simplify right side
    11,121.10x = 97,300,697.07
  5. Step 5: Solve for x
    x = 97,300,697.07/11,121.10
  6. Step 6: Final answer
    x = 8,749.20

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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.