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Finding the Fourth Proportional to 14,606.40, 21,909.60 and 11,690.40

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Solution

The fourth proportional to 14,606.40, 21,909.60 and 11,690.40 is: 17,535.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,606.40 : 21,909.60 = 11,690.40 : x
  2. Step 2: Convert to fraction form
    14,606.40/21,909.60 = 11,690.40/x
  3. Step 3: Cross multiply
    14,606.40x = 21,909.60 × 11,690.40
  4. Step 4: Simplify right side
    14,606.40x = 256,131,987.84
  5. Step 5: Solve for x
    x = 256,131,987.84/14,606.40
  6. Step 6: Final answer
    x = 17,535.60

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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.