Home / 13,436.40-20,162.88-8,499.24

Finding the Fourth Proportional to 13,436.40, 20,162.88 and 8,499.24

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Solution

The fourth proportional to 13,436.40, 20,162.88 and 8,499.24 is: 12,754.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,436.40 : 20,162.88 = 8,499.24 : x
  2. Step 2: Convert to fraction form
    13,436.40/20,162.88 = 8,499.24/x
  3. Step 3: Cross multiply
    13,436.40x = 20,162.88 × 8,499.24
  4. Step 4: Simplify right side
    13,436.40x = 171,369,156.21
  5. Step 5: Solve for x
    x = 171,369,156.21/13,436.40
  6. Step 6: Final answer
    x = 12,754.10

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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.