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Finding the Fourth Proportional to 10,430.73, 15,645.99 and 5,509.98

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Solution

The fourth proportional to 10,430.73, 15,645.99 and 5,509.98 is: 8,264.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,430.73 : 15,645.99 = 5,509.98 : x
  2. Step 2: Convert to fraction form
    10,430.73/15,645.99 = 5,509.98/x
  3. Step 3: Cross multiply
    10,430.73x = 15,645.99 × 5,509.98
  4. Step 4: Simplify right side
    10,430.73x = 86,209,091.98
  5. Step 5: Solve for x
    x = 86,209,091.98/10,430.73
  6. Step 6: Final answer
    x = 8,264.91

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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.