Home / 12,521.60-18,787.80-6,365.60

Finding the Fourth Proportional to 12,521.60, 18,787.80 and 6,365.60

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Solution

The fourth proportional to 12,521.60, 18,787.80 and 6,365.60 is: 9,551.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.60 : 18,787.80 = 6,365.60 : x
  2. Step 2: Convert to fraction form
    12,521.60/18,787.80 = 6,365.60/x
  3. Step 3: Cross multiply
    12,521.60x = 18,787.80 × 6,365.60
  4. Step 4: Simplify right side
    12,521.60x = 119,595,619.68
  5. Step 5: Solve for x
    x = 119,595,619.68/12,521.60
  6. Step 6: Final answer
    x = 9,551.15

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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.