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Finding the Fourth Proportional to 18,345.60, 25,320.96 and 12,058.56

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Solution

The fourth proportional to 18,345.60, 25,320.96 and 12,058.56 is: 16,643.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.60 : 25,320.96 = 12,058.56 : x
  2. Step 2: Convert to fraction form
    18,345.60/25,320.96 = 12,058.56/x
  3. Step 3: Cross multiply
    18,345.60x = 25,320.96 × 12,058.56
  4. Step 4: Simplify right side
    18,345.60x = 305,334,315.42
  5. Step 5: Solve for x
    x = 305,334,315.42/18,345.60
  6. Step 6: Final answer
    x = 16,643.46

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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.