Home / 21,113.92-31,667.64-9,425.08

Finding the Fourth Proportional to 21,113.92, 31,667.64 and 9,425.08

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Solution

The fourth proportional to 21,113.92, 31,667.64 and 9,425.08 is: 14,136.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,113.92 : 31,667.64 = 9,425.08 : x
  2. Step 2: Convert to fraction form
    21,113.92/31,667.64 = 9,425.08/x
  3. Step 3: Cross multiply
    21,113.92x = 31,667.64 × 9,425.08
  4. Step 4: Simplify right side
    21,113.92x = 298,470,040.41
  5. Step 5: Solve for x
    x = 298,470,040.41/21,113.92
  6. Step 6: Final answer
    x = 14,136.17

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1.5x scale

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.