Home / 15,502.91-21,393.83-8,429.31

Finding the Fourth Proportional to 15,502.91, 21,393.83 and 8,429.31

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Solution

The fourth proportional to 15,502.91, 21,393.83 and 8,429.31 is: 11,632.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,502.91 : 21,393.83 = 8,429.31 : x
  2. Step 2: Convert to fraction form
    15,502.91/21,393.83 = 8,429.31/x
  3. Step 3: Cross multiply
    15,502.91x = 21,393.83 × 8,429.31
  4. Step 4: Simplify right side
    15,502.91x = 180,335,183.01
  5. Step 5: Solve for x
    x = 180,335,183.01/15,502.91
  6. Step 6: Final answer
    x = 11,632.35

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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.