Home / 13,430.66-20,126.54-7,574.82

Finding the Fourth Proportional to 13,430.66, 20,126.54 and 7,574.82

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Solution

The fourth proportional to 13,430.66, 20,126.54 and 7,574.82 is: 11,351.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.66 : 20,126.54 = 7,574.82 : x
  2. Step 2: Convert to fraction form
    13,430.66/20,126.54 = 7,574.82/x
  3. Step 3: Cross multiply
    13,430.66x = 20,126.54 × 7,574.82
  4. Step 4: Simplify right side
    13,430.66x = 152,454,917.72
  5. Step 5: Solve for x
    x = 152,454,917.72/13,430.66
  6. Step 6: Final answer
    x = 11,351.26

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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.