Home / 10,152.20-15,225.38-3,911.72

Finding the Fourth Proportional to 10,152.20, 15,225.38 and 3,911.72

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Solution

The fourth proportional to 10,152.20, 15,225.38 and 3,911.72 is: 5,866.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,152.20 : 15,225.38 = 3,911.72 : x
  2. Step 2: Convert to fraction form
    10,152.20/15,225.38 = 3,911.72/x
  3. Step 3: Cross multiply
    10,152.20x = 15,225.38 × 3,911.72
  4. Step 4: Simplify right side
    10,152.20x = 59,557,423.45
  5. Step 5: Solve for x
    x = 59,557,423.45/10,152.20
  6. Step 6: Final answer
    x = 5,866.45

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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.