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Finding the Fourth Proportional to 14,518.80, 21,784.80 and 8,607.36

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Solution

The fourth proportional to 14,518.80, 21,784.80 and 8,607.36 is: 12,914.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,518.80 : 21,784.80 = 8,607.36 : x
  2. Step 2: Convert to fraction form
    14,518.80/21,784.80 = 8,607.36/x
  3. Step 3: Cross multiply
    14,518.80x = 21,784.80 × 8,607.36
  4. Step 4: Simplify right side
    14,518.80x = 187,509,616.13
  5. Step 5: Solve for x
    x = 187,509,616.13/14,518.80
  6. Step 6: Final answer
    x = 12,914.95

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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.