Home / 9,429.66-13,012.32-5,180.40

Finding the Fourth Proportional to 9,429.66, 13,012.32 and 5,180.40

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Solution

The fourth proportional to 9,429.66, 13,012.32 and 5,180.40 is: 7,148.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,429.66 : 13,012.32 = 5,180.40 : x
  2. Step 2: Convert to fraction form
    9,429.66/13,012.32 = 5,180.40/x
  3. Step 3: Cross multiply
    9,429.66x = 13,012.32 × 5,180.40
  4. Step 4: Simplify right side
    9,429.66x = 67,409,022.53
  5. Step 5: Solve for x
    x = 67,409,022.53/9,429.66
  6. Step 6: Final answer
    x = 7,148.62

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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.