Home / 10,486.81-14,471.90-5,771.20

Finding the Fourth Proportional to 10,486.81, 14,471.90 and 5,771.20

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Solution

The fourth proportional to 10,486.81, 14,471.90 and 5,771.20 is: 7,964.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,486.81 : 14,471.90 = 5,771.20 : x
  2. Step 2: Convert to fraction form
    10,486.81/14,471.90 = 5,771.20/x
  3. Step 3: Cross multiply
    10,486.81x = 14,471.90 × 5,771.20
  4. Step 4: Simplify right side
    10,486.81x = 83,520,229.28
  5. Step 5: Solve for x
    x = 83,520,229.28/10,486.81
  6. Step 6: Final answer
    x = 7,964.31

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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.