Home / 21,951.28-30,284.59-14,401.81

Finding the Fourth Proportional to 21,951.28, 30,284.59 and 14,401.81

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Solution

The fourth proportional to 21,951.28, 30,284.59 and 14,401.81 is: 19,869.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,951.28 : 30,284.59 = 14,401.81 : x
  2. Step 2: Convert to fraction form
    21,951.28/30,284.59 = 14,401.81/x
  3. Step 3: Cross multiply
    21,951.28x = 30,284.59 × 14,401.81
  4. Step 4: Simplify right side
    21,951.28x = 436,152,911.11
  5. Step 5: Solve for x
    x = 436,152,911.11/21,951.28
  6. Step 6: Final answer
    x = 19,869.13

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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.