Home / 10,354.75-14,289.45-5,639.11

Finding the Fourth Proportional to 10,354.75, 14,289.45 and 5,639.11

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Solution

The fourth proportional to 10,354.75, 14,289.45 and 5,639.11 is: 7,781.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,354.75 : 14,289.45 = 5,639.11 : x
  2. Step 2: Convert to fraction form
    10,354.75/14,289.45 = 5,639.11/x
  3. Step 3: Cross multiply
    10,354.75x = 14,289.45 × 5,639.11
  4. Step 4: Simplify right side
    10,354.75x = 80,579,708.94
  5. Step 5: Solve for x
    x = 80,579,708.94/10,354.75
  6. Step 6: Final answer
    x = 7,781.91

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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.