Home / 10,136.72-13,987.44-5,660.72

Finding the Fourth Proportional to 10,136.72, 13,987.44 and 5,660.72

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Solution

The fourth proportional to 10,136.72, 13,987.44 and 5,660.72 is: 7,811.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,136.72 : 13,987.44 = 5,660.72 : x
  2. Step 2: Convert to fraction form
    10,136.72/13,987.44 = 5,660.72/x
  3. Step 3: Cross multiply
    10,136.72x = 13,987.44 × 5,660.72
  4. Step 4: Simplify right side
    10,136.72x = 79,178,981.36
  5. Step 5: Solve for x
    x = 79,178,981.36/10,136.72
  6. Step 6: Final answer
    x = 7,811.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.