Home / 21,217.28-29,277.60-12,263.36

Finding the Fourth Proportional to 21,217.28, 29,277.60 and 12,263.36

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Solution

The fourth proportional to 21,217.28, 29,277.60 and 12,263.36 is: 16,922.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.28 : 29,277.60 = 12,263.36 : x
  2. Step 2: Convert to fraction form
    21,217.28/29,277.60 = 12,263.36/x
  3. Step 3: Cross multiply
    21,217.28x = 29,277.60 × 12,263.36
  4. Step 4: Simplify right side
    21,217.28x = 359,041,748.74
  5. Step 5: Solve for x
    x = 359,041,748.74/21,217.28
  6. Step 6: Final answer
    x = 16,922.14

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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.