Home / 14,569.20-21,805.20-12,819.60

Finding the Fourth Proportional to 14,569.20, 21,805.20 and 12,819.60

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Solution

The fourth proportional to 14,569.20, 21,805.20 and 12,819.60 is: 19,186.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,569.20 : 21,805.20 = 12,819.60 : x
  2. Step 2: Convert to fraction form
    14,569.20/21,805.20 = 12,819.60/x
  3. Step 3: Cross multiply
    14,569.20x = 21,805.20 × 12,819.60
  4. Step 4: Simplify right side
    14,569.20x = 279,533,941.92
  5. Step 5: Solve for x
    x = 279,533,941.92/14,569.20
  6. Step 6: Final answer
    x = 19,186.64

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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.