Home / 10,383.29-14,329.56-7,861.40

Finding the Fourth Proportional to 10,383.29, 14,329.56 and 7,861.40

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Solution

The fourth proportional to 10,383.29, 14,329.56 and 7,861.40 is: 10,849.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,383.29 : 14,329.56 = 7,861.40 : x
  2. Step 2: Convert to fraction form
    10,383.29/14,329.56 = 7,861.40/x
  3. Step 3: Cross multiply
    10,383.29x = 14,329.56 × 7,861.40
  4. Step 4: Simplify right side
    10,383.29x = 112,650,450.94
  5. Step 5: Solve for x
    x = 112,650,450.94/10,383.29
  6. Step 6: Final answer
    x = 10,849.21

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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.