Home / 12,430.86-17,152.83-7,125.90

Finding the Fourth Proportional to 12,430.86, 17,152.83 and 7,125.90

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Solution

The fourth proportional to 12,430.86, 17,152.83 and 7,125.90 is: 9,832.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.86 : 17,152.83 = 7,125.90 : x
  2. Step 2: Convert to fraction form
    12,430.86/17,152.83 = 7,125.90/x
  3. Step 3: Cross multiply
    12,430.86x = 17,152.83 × 7,125.90
  4. Step 4: Simplify right side
    12,430.86x = 122,229,351.30
  5. Step 5: Solve for x
    x = 122,229,351.30/12,430.86
  6. Step 6: Final answer
    x = 9,832.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.