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Finding the Fourth Proportional to 12,712.96, 19,068.68 and 7,551.68

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Solution

The fourth proportional to 12,712.96, 19,068.68 and 7,551.68 is: 11,327.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,712.96 : 19,068.68 = 7,551.68 : x
  2. Step 2: Convert to fraction form
    12,712.96/19,068.68 = 7,551.68/x
  3. Step 3: Cross multiply
    12,712.96x = 19,068.68 × 7,551.68
  4. Step 4: Simplify right side
    12,712.96x = 144,000,569.38
  5. Step 5: Solve for x
    x = 144,000,569.38/12,712.96
  6. Step 6: Final answer
    x = 11,327.07

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1.5x scale

Why These Related Problems?

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