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Finding the Fourth Proportional to 10,372, 14,313.52 and 5,656.40

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Solution

The fourth proportional to 10,372, 14,313.52 and 5,656.40 is: 7,805.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,372 : 14,313.52 = 5,656.40 : x
  2. Step 2: Convert to fraction form
    10,372/14,313.52 = 5,656.40/x
  3. Step 3: Cross multiply
    10,372x = 14,313.52 × 5,656.40
  4. Step 4: Simplify right side
    10,372x = 80,962,994.53
  5. Step 5: Solve for x
    x = 80,962,994.53/10,372
  6. Step 6: Final answer
    x = 7,805.92

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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.