Home / 13,836.80-20,690.40-10,337.60

Finding the Fourth Proportional to 13,836.80, 20,690.40 and 10,337.60

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Solution

The fourth proportional to 13,836.80, 20,690.40 and 10,337.60 is: 15,457.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,836.80 : 20,690.40 = 10,337.60 : x
  2. Step 2: Convert to fraction form
    13,836.80/20,690.40 = 10,337.60/x
  3. Step 3: Cross multiply
    13,836.80x = 20,690.40 × 10,337.60
  4. Step 4: Simplify right side
    13,836.80x = 213,889,079.04
  5. Step 5: Solve for x
    x = 213,889,079.04/13,836.80
  6. Step 6: Final answer
    x = 15,457.99

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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.