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Finding the Fourth Proportional to 10,503.96, 15,775.38 and 7,043.64

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Solution

The fourth proportional to 10,503.96, 15,775.38 and 7,043.64 is: 10,578.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,503.96 : 15,775.38 = 7,043.64 : x
  2. Step 2: Convert to fraction form
    10,503.96/15,775.38 = 7,043.64/x
  3. Step 3: Cross multiply
    10,503.96x = 15,775.38 × 7,043.64
  4. Step 4: Simplify right side
    10,503.96x = 111,116,097.58
  5. Step 5: Solve for x
    x = 111,116,097.58/10,503.96
  6. Step 6: Final answer
    x = 10,578.50

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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.