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Finding the Fourth Proportional to 14,558.40, 21,859.20 and 11,275.20

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Solution

The fourth proportional to 14,558.40, 21,859.20 and 11,275.20 is: 16,929.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,558.40 : 21,859.20 = 11,275.20 : x
  2. Step 2: Convert to fraction form
    14,558.40/21,859.20 = 11,275.20/x
  3. Step 3: Cross multiply
    14,558.40x = 21,859.20 × 11,275.20
  4. Step 4: Simplify right side
    14,558.40x = 246,466,851.84
  5. Step 5: Solve for x
    x = 246,466,851.84/14,558.40
  6. Step 6: Final answer
    x = 16,929.53

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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.