Home / 10,929.93-15,081.16-6,455.09

Finding the Fourth Proportional to 10,929.93, 15,081.16 and 6,455.09

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Solution

The fourth proportional to 10,929.93, 15,081.16 and 6,455.09 is: 8,906.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.93 : 15,081.16 = 6,455.09 : x
  2. Step 2: Convert to fraction form
    10,929.93/15,081.16 = 6,455.09/x
  3. Step 3: Cross multiply
    10,929.93x = 15,081.16 × 6,455.09
  4. Step 4: Simplify right side
    10,929.93x = 97,350,222.22
  5. Step 5: Solve for x
    x = 97,350,222.22/10,929.93
  6. Step 6: Final answer
    x = 8,906.75

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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.