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Finding the Fourth Proportional to 12,547.84, 18,814.38 and 4,757.20

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Solution

The fourth proportional to 12,547.84, 18,814.38 and 4,757.20 is: 7,133.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,547.84 : 18,814.38 = 4,757.20 : x
  2. Step 2: Convert to fraction form
    12,547.84/18,814.38 = 4,757.20/x
  3. Step 3: Cross multiply
    12,547.84x = 18,814.38 × 4,757.20
  4. Step 4: Simplify right side
    12,547.84x = 89,503,768.54
  5. Step 5: Solve for x
    x = 89,503,768.54/12,547.84
  6. Step 6: Final answer
    x = 7,133.00

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.