Home / 12,441.60-18,532.80-11,858.40

Finding the Fourth Proportional to 12,441.60, 18,532.80 and 11,858.40

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Solution

The fourth proportional to 12,441.60, 18,532.80 and 11,858.40 is: 17,664.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,441.60 : 18,532.80 = 11,858.40 : x
  2. Step 2: Convert to fraction form
    12,441.60/18,532.80 = 11,858.40/x
  3. Step 3: Cross multiply
    12,441.60x = 18,532.80 × 11,858.40
  4. Step 4: Simplify right side
    12,441.60x = 219,769,355.52
  5. Step 5: Solve for x
    x = 219,769,355.52/12,441.60
  6. Step 6: Final answer
    x = 17,664.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.