Home / 15,502.98-21,393.20-8,429.34

Finding the Fourth Proportional to 15,502.98, 21,393.20 and 8,429.34

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Solution

The fourth proportional to 15,502.98, 21,393.20 and 8,429.34 is: 11,631.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,502.98 : 21,393.20 = 8,429.34 : x
  2. Step 2: Convert to fraction form
    15,502.98/21,393.20 = 8,429.34/x
  3. Step 3: Cross multiply
    15,502.98x = 21,393.20 × 8,429.34
  4. Step 4: Simplify right side
    15,502.98x = 180,330,556.49
  5. Step 5: Solve for x
    x = 180,330,556.49/15,502.98
  6. Step 6: Final answer
    x = 11,631.99

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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.