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Finding the Fourth Proportional to 14,918.45, 20,587.53 and 8,204.51

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Solution

The fourth proportional to 14,918.45, 20,587.53 and 8,204.51 is: 11,322.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,918.45 : 20,587.53 = 8,204.51 : x
  2. Step 2: Convert to fraction form
    14,918.45/20,587.53 = 8,204.51/x
  3. Step 3: Cross multiply
    14,918.45x = 20,587.53 × 8,204.51
  4. Step 4: Simplify right side
    14,918.45x = 168,910,492.82
  5. Step 5: Solve for x
    x = 168,910,492.82/14,918.45
  6. Step 6: Final answer
    x = 11,322.26

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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.