Home / 10,438.09-14,388.20-7,910.08

Finding the Fourth Proportional to 10,438.09, 14,388.20 and 7,910.08

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Solution

The fourth proportional to 10,438.09, 14,388.20 and 7,910.08 is: 10,903.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,438.09 : 14,388.20 = 7,910.08 : x
  2. Step 2: Convert to fraction form
    10,438.09/14,388.20 = 7,910.08/x
  3. Step 3: Cross multiply
    10,438.09x = 14,388.20 × 7,910.08
  4. Step 4: Simplify right side
    10,438.09x = 113,811,767.20
  5. Step 5: Solve for x
    x = 113,811,767.20/10,438.09
  6. Step 6: Final answer
    x = 10,903.51

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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.