Home / 10,408.88-14,346.76-7,890.19

Finding the Fourth Proportional to 10,408.88, 14,346.76 and 7,890.19

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Solution

The fourth proportional to 10,408.88, 14,346.76 and 7,890.19 is: 10,875.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,408.88 : 14,346.76 = 7,890.19 : x
  2. Step 2: Convert to fraction form
    10,408.88/14,346.76 = 7,890.19/x
  3. Step 3: Cross multiply
    10,408.88x = 14,346.76 × 7,890.19
  4. Step 4: Simplify right side
    10,408.88x = 113,198,606.69
  5. Step 5: Solve for x
    x = 113,198,606.69/10,408.88
  6. Step 6: Final answer
    x = 10,875.19

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Double scale
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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.