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Finding the Fourth Proportional to 10,603.40, 15,905.02 and 4,443.08

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Solution

The fourth proportional to 10,603.40, 15,905.02 and 4,443.08 is: 6,664.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,603.40 : 15,905.02 = 4,443.08 : x
  2. Step 2: Convert to fraction form
    10,603.40/15,905.02 = 4,443.08/x
  3. Step 3: Cross multiply
    10,603.40x = 15,905.02 × 4,443.08
  4. Step 4: Simplify right side
    10,603.40x = 70,667,276.26
  5. Step 5: Solve for x
    x = 70,667,276.26/10,603.40
  6. Step 6: Final answer
    x = 6,664.59

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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.