Home / 21,960.40-30,308.68-14,005.84

Finding the Fourth Proportional to 21,960.40, 30,308.68 and 14,005.84

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Solution

The fourth proportional to 21,960.40, 30,308.68 and 14,005.84 is: 19,330.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,960.40 : 30,308.68 = 14,005.84 : x
  2. Step 2: Convert to fraction form
    21,960.40/30,308.68 = 14,005.84/x
  3. Step 3: Cross multiply
    21,960.40x = 30,308.68 × 14,005.84
  4. Step 4: Simplify right side
    21,960.40x = 424,498,522.69
  5. Step 5: Solve for x
    x = 424,498,522.69/21,960.40
  6. Step 6: Final answer
    x = 19,330.18

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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.