Home / 18,420.40-27,565.80-12,847.60

Finding the Fourth Proportional to 18,420.40, 27,565.80 and 12,847.60

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Solution

The fourth proportional to 18,420.40, 27,565.80 and 12,847.60 is: 19,226.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.40 : 27,565.80 = 12,847.60 : x
  2. Step 2: Convert to fraction form
    18,420.40/27,565.80 = 12,847.60/x
  3. Step 3: Cross multiply
    18,420.40x = 27,565.80 × 12,847.60
  4. Step 4: Simplify right side
    18,420.40x = 354,154,372.08
  5. Step 5: Solve for x
    x = 354,154,372.08/18,420.40
  6. Step 6: Final answer
    x = 19,226.20

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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.