Home / 11,031.09-15,225.08-6,318.51

Finding the Fourth Proportional to 11,031.09, 15,225.08 and 6,318.51

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Solution

The fourth proportional to 11,031.09, 15,225.08 and 6,318.51 is: 8,720.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,031.09 : 15,225.08 = 6,318.51 : x
  2. Step 2: Convert to fraction form
    11,031.09/15,225.08 = 6,318.51/x
  3. Step 3: Cross multiply
    11,031.09x = 15,225.08 × 6,318.51
  4. Step 4: Simplify right side
    11,031.09x = 96,199,788.64
  5. Step 5: Solve for x
    x = 96,199,788.64/11,031.09
  6. Step 6: Final answer
    x = 8,720.79

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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.