Home / 10,136.45-13,988.30-5,660.20

Finding the Fourth Proportional to 10,136.45, 13,988.30 and 5,660.20

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Solution

The fourth proportional to 10,136.45, 13,988.30 and 5,660.20 is: 7,811.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,136.45 : 13,988.30 = 5,660.20 : x
  2. Step 2: Convert to fraction form
    10,136.45/13,988.30 = 5,660.20/x
  3. Step 3: Cross multiply
    10,136.45x = 13,988.30 × 5,660.20
  4. Step 4: Simplify right side
    10,136.45x = 79,176,575.66
  5. Step 5: Solve for x
    x = 79,176,575.66/10,136.45
  6. Step 6: Final answer
    x = 7,811.08

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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.