Home / 10,354.84-14,289.65-5,639.12

Finding the Fourth Proportional to 10,354.84, 14,289.65 and 5,639.12

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Solution

The fourth proportional to 10,354.84, 14,289.65 and 5,639.12 is: 7,781.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,354.84 : 14,289.65 = 5,639.12 : x
  2. Step 2: Convert to fraction form
    10,354.84/14,289.65 = 5,639.12/x
  3. Step 3: Cross multiply
    10,354.84x = 14,289.65 × 5,639.12
  4. Step 4: Simplify right side
    10,354.84x = 80,581,026.20
  5. Step 5: Solve for x
    x = 80,581,026.20/10,354.84
  6. Step 6: Final answer
    x = 7,781.97

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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.