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Finding the Fourth Proportional to 14,589.60, 21,866.40 and 9,909.60

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Solution

The fourth proportional to 14,589.60, 21,866.40 and 9,909.60 is: 14,852.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,589.60 : 21,866.40 = 9,909.60 : x
  2. Step 2: Convert to fraction form
    14,589.60/21,866.40 = 9,909.60/x
  3. Step 3: Cross multiply
    14,589.60x = 21,866.40 × 9,909.60
  4. Step 4: Simplify right side
    14,589.60x = 216,687,277.44
  5. Step 5: Solve for x
    x = 216,687,277.44/14,589.60
  6. Step 6: Final answer
    x = 14,852.17

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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.