Home / 10,069.81-15,106.25-5,136.75

Finding the Fourth Proportional to 10,069.81, 15,106.25 and 5,136.75

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Solution

The fourth proportional to 10,069.81, 15,106.25 and 5,136.75 is: 7,705.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,069.81 : 15,106.25 = 5,136.75 : x
  2. Step 2: Convert to fraction form
    10,069.81/15,106.25 = 5,136.75/x
  3. Step 3: Cross multiply
    10,069.81x = 15,106.25 × 5,136.75
  4. Step 4: Simplify right side
    10,069.81x = 77,597,077.36
  5. Step 5: Solve for x
    x = 77,597,077.36/10,069.81
  6. Step 6: Final answer
    x = 7,705.92

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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.