Home / 13,555.40-20,333.10-8,904.80

Finding the Fourth Proportional to 13,555.40, 20,333.10 and 8,904.80

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Solution

The fourth proportional to 13,555.40, 20,333.10 and 8,904.80 is: 13,357.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.40 : 20,333.10 = 8,904.80 : x
  2. Step 2: Convert to fraction form
    13,555.40/20,333.10 = 8,904.80/x
  3. Step 3: Cross multiply
    13,555.40x = 20,333.10 × 8,904.80
  4. Step 4: Simplify right side
    13,555.40x = 181,062,188.88
  5. Step 5: Solve for x
    x = 181,062,188.88/13,555.40
  6. Step 6: Final answer
    x = 13,357.20

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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.