Home / 12,347.12-18,520.26-5,764.28

Finding the Fourth Proportional to 12,347.12, 18,520.26 and 5,764.28

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Solution

The fourth proportional to 12,347.12, 18,520.26 and 5,764.28 is: 8,646.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,347.12 : 18,520.26 = 5,764.28 : x
  2. Step 2: Convert to fraction form
    12,347.12/18,520.26 = 5,764.28/x
  3. Step 3: Cross multiply
    12,347.12x = 18,520.26 × 5,764.28
  4. Step 4: Simplify right side
    12,347.12x = 106,755,964.31
  5. Step 5: Solve for x
    x = 106,755,964.31/12,347.12
  6. Step 6: Final answer
    x = 8,646.22

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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.