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Finding the Fourth Proportional to 15,312.75, 21,131.42 and 8,598.22

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Solution

The fourth proportional to 15,312.75, 21,131.42 and 8,598.22 is: 11,865.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,312.75 : 21,131.42 = 8,598.22 : x
  2. Step 2: Convert to fraction form
    15,312.75/21,131.42 = 8,598.22/x
  3. Step 3: Cross multiply
    15,312.75x = 21,131.42 × 8,598.22
  4. Step 4: Simplify right side
    15,312.75x = 181,692,502.25
  5. Step 5: Solve for x
    x = 181,692,502.25/15,312.75
  6. Step 6: Final answer
    x = 11,865.44

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.