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Finding the Fourth Proportional to 10,896, 15,036.48 and 6,480

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Solution

The fourth proportional to 10,896, 15,036.48 and 6,480 is: 8,942.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,896 : 15,036.48 = 6,480 : x
  2. Step 2: Convert to fraction form
    10,896/15,036.48 = 6,480/x
  3. Step 3: Cross multiply
    10,896x = 15,036.48 × 6,480
  4. Step 4: Simplify right side
    10,896x = 97,436,390.40
  5. Step 5: Solve for x
    x = 97,436,390.40/10,896
  6. Step 6: Final answer
    x = 8,942.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.