Home / 10,129.38-15,203.80-4,938.90

Finding the Fourth Proportional to 10,129.38, 15,203.80 and 4,938.90

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Solution

The fourth proportional to 10,129.38, 15,203.80 and 4,938.90 is: 7,413.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.38 : 15,203.80 = 4,938.90 : x
  2. Step 2: Convert to fraction form
    10,129.38/15,203.80 = 4,938.90/x
  3. Step 3: Cross multiply
    10,129.38x = 15,203.80 × 4,938.90
  4. Step 4: Simplify right side
    10,129.38x = 75,090,047.82
  5. Step 5: Solve for x
    x = 75,090,047.82/10,129.38
  6. Step 6: Final answer
    x = 7,413.09

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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.