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Finding the Fourth Proportional to 10,603.56, 15,905.62 and 5,920.96

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Solution

The fourth proportional to 10,603.56, 15,905.62 and 5,920.96 is: 8,881.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,603.56 : 15,905.62 = 5,920.96 : x
  2. Step 2: Convert to fraction form
    10,603.56/15,905.62 = 5,920.96/x
  3. Step 3: Cross multiply
    10,603.56x = 15,905.62 × 5,920.96
  4. Step 4: Simplify right side
    10,603.56x = 94,176,539.80
  5. Step 5: Solve for x
    x = 94,176,539.80/10,603.56
  6. Step 6: Final answer
    x = 8,881.60

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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.