Home / 13,136.72-19,705.08-5,343.76

Finding the Fourth Proportional to 13,136.72, 19,705.08 and 5,343.76

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Solution

The fourth proportional to 13,136.72, 19,705.08 and 5,343.76 is: 8,015.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136.72 : 19,705.08 = 5,343.76 : x
  2. Step 2: Convert to fraction form
    13,136.72/19,705.08 = 5,343.76/x
  3. Step 3: Cross multiply
    13,136.72x = 19,705.08 × 5,343.76
  4. Step 4: Simplify right side
    13,136.72x = 105,299,218.30
  5. Step 5: Solve for x
    x = 105,299,218.30/13,136.72
  6. Step 6: Final answer
    x = 8,015.64

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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.