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Finding the Fourth Proportional to 14,679.60, 22,024.80 and 14,139.60

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Solution

The fourth proportional to 14,679.60, 22,024.80 and 14,139.60 is: 21,214.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,679.60 : 22,024.80 = 14,139.60 : x
  2. Step 2: Convert to fraction form
    14,679.60/22,024.80 = 14,139.60/x
  3. Step 3: Cross multiply
    14,679.60x = 22,024.80 × 14,139.60
  4. Step 4: Simplify right side
    14,679.60x = 311,421,862.08
  5. Step 5: Solve for x
    x = 311,421,862.08/14,679.60
  6. Step 6: Final answer
    x = 21,214.60

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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.