Home / 14,918.74-20,587.91-8,204.78

Finding the Fourth Proportional to 14,918.74, 20,587.91 and 8,204.78

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Solution

The fourth proportional to 14,918.74, 20,587.91 and 8,204.78 is: 11,322.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,918.74 : 20,587.91 = 8,204.78 : x
  2. Step 2: Convert to fraction form
    14,918.74/20,587.91 = 8,204.78/x
  3. Step 3: Cross multiply
    14,918.74x = 20,587.91 × 8,204.78
  4. Step 4: Simplify right side
    14,918.74x = 168,919,282.66
  5. Step 5: Solve for x
    x = 168,919,282.66/14,918.74
  6. Step 6: Final answer
    x = 11,322.63

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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.