Home / 14,223.28-19,631.64-8,638.96

Finding the Fourth Proportional to 14,223.28, 19,631.64 and 8,638.96

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Solution

The fourth proportional to 14,223.28, 19,631.64 and 8,638.96 is: 11,923.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,223.28 : 19,631.64 = 8,638.96 : x
  2. Step 2: Convert to fraction form
    14,223.28/19,631.64 = 8,638.96/x
  3. Step 3: Cross multiply
    14,223.28x = 19,631.64 × 8,638.96
  4. Step 4: Simplify right side
    14,223.28x = 169,596,952.69
  5. Step 5: Solve for x
    x = 169,596,952.69/14,223.28
  6. Step 6: Final answer
    x = 11,923.90

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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.