Home / 10,520.69-15,776.91-3,943.28

Finding the Fourth Proportional to 10,520.69, 15,776.91 and 3,943.28

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Solution

The fourth proportional to 10,520.69, 15,776.91 and 3,943.28 is: 5,913.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520.69 : 15,776.91 = 3,943.28 : x
  2. Step 2: Convert to fraction form
    10,520.69/15,776.91 = 3,943.28/x
  3. Step 3: Cross multiply
    10,520.69x = 15,776.91 × 3,943.28
  4. Step 4: Simplify right side
    10,520.69x = 62,212,813.11
  5. Step 5: Solve for x
    x = 62,212,813.11/10,520.69
  6. Step 6: Final answer
    x = 5,913.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.