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Finding the Fourth Proportional to 18,607.72, 25,678.86 and 10,224.28

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Solution

The fourth proportional to 18,607.72, 25,678.86 and 10,224.28 is: 14,109.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.72 : 25,678.86 = 10,224.28 : x
  2. Step 2: Convert to fraction form
    18,607.72/25,678.86 = 10,224.28/x
  3. Step 3: Cross multiply
    18,607.72x = 25,678.86 × 10,224.28
  4. Step 4: Simplify right side
    18,607.72x = 262,547,854.72
  5. Step 5: Solve for x
    x = 262,547,854.72/18,607.72
  6. Step 6: Final answer
    x = 14,109.62

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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.