Home / 10,106.28-15,149.70-5,178.24

Finding the Fourth Proportional to 10,106.28, 15,149.70 and 5,178.24

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Solution

The fourth proportional to 10,106.28, 15,149.70 and 5,178.24 is: 7,762.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,106.28 : 15,149.70 = 5,178.24 : x
  2. Step 2: Convert to fraction form
    10,106.28/15,149.70 = 5,178.24/x
  3. Step 3: Cross multiply
    10,106.28x = 15,149.70 × 5,178.24
  4. Step 4: Simplify right side
    10,106.28x = 78,448,782.53
  5. Step 5: Solve for x
    x = 78,448,782.53/10,106.28
  6. Step 6: Final answer
    x = 7,762.38

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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.