Home / 12,254.77-18,365.13-6,399.70

Finding the Fourth Proportional to 12,254.77, 18,365.13 and 6,399.70

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Solution

The fourth proportional to 12,254.77, 18,365.13 and 6,399.70 is: 9,590.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,254.77 : 18,365.13 = 6,399.70 : x
  2. Step 2: Convert to fraction form
    12,254.77/18,365.13 = 6,399.70/x
  3. Step 3: Cross multiply
    12,254.77x = 18,365.13 × 6,399.70
  4. Step 4: Simplify right side
    12,254.77x = 117,531,322.46
  5. Step 5: Solve for x
    x = 117,531,322.46/12,254.77
  6. Step 6: Final answer
    x = 9,590.66

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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.