Home / 10,376.20-15,602.70-8,686.60

Finding the Fourth Proportional to 10,376.20, 15,602.70 and 8,686.60

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Solution

The fourth proportional to 10,376.20, 15,602.70 and 8,686.60 is: 13,062.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,376.20 : 15,602.70 = 8,686.60 : x
  2. Step 2: Convert to fraction form
    10,376.20/15,602.70 = 8,686.60/x
  3. Step 3: Cross multiply
    10,376.20x = 15,602.70 × 8,686.60
  4. Step 4: Simplify right side
    10,376.20x = 135,534,413.82
  5. Step 5: Solve for x
    x = 135,534,413.82/10,376.20
  6. Step 6: Final answer
    x = 13,062.05

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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.