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Finding the Fourth Proportional to 12,965.93, 17,888.13 and 8,492.18

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Solution

The fourth proportional to 12,965.93, 17,888.13 and 8,492.18 is: 11,716.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,965.93 : 17,888.13 = 8,492.18 : x
  2. Step 2: Convert to fraction form
    12,965.93/17,888.13 = 8,492.18/x
  3. Step 3: Cross multiply
    12,965.93x = 17,888.13 × 8,492.18
  4. Step 4: Simplify right side
    12,965.93x = 151,909,219.82
  5. Step 5: Solve for x
    x = 151,909,219.82/12,965.93
  6. Step 6: Final answer
    x = 11,716.03

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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.