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Finding the Fourth Proportional to 12,595.68, 18,867.60 and 7,389

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Solution

The fourth proportional to 12,595.68, 18,867.60 and 7,389 is: 11,068.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,595.68 : 18,867.60 = 7,389 : x
  2. Step 2: Convert to fraction form
    12,595.68/18,867.60 = 7,389/x
  3. Step 3: Cross multiply
    12,595.68x = 18,867.60 × 7,389
  4. Step 4: Simplify right side
    12,595.68x = 139,412,696.40
  5. Step 5: Solve for x
    x = 139,412,696.40/12,595.68
  6. Step 6: Final answer
    x = 11,068.29

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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.