Home / 10,213.36-15,231.32-8,904.40

Finding the Fourth Proportional to 10,213.36, 15,231.32 and 8,904.40

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Solution

The fourth proportional to 10,213.36, 15,231.32 and 8,904.40 is: 13,279.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,213.36 : 15,231.32 = 8,904.40 : x
  2. Step 2: Convert to fraction form
    10,213.36/15,231.32 = 8,904.40/x
  3. Step 3: Cross multiply
    10,213.36x = 15,231.32 × 8,904.40
  4. Step 4: Simplify right side
    10,213.36x = 135,625,765.81
  5. Step 5: Solve for x
    x = 135,625,765.81/10,213.36
  6. Step 6: Final answer
    x = 13,279.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.