Home / 10,212.48-15,318.72-2,816.70

Finding the Fourth Proportional to 10,212.48, 15,318.72 and 2,816.70

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Solution

The fourth proportional to 10,212.48, 15,318.72 and 2,816.70 is: 4,225.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,212.48 : 15,318.72 = 2,816.70 : x
  2. Step 2: Convert to fraction form
    10,212.48/15,318.72 = 2,816.70/x
  3. Step 3: Cross multiply
    10,212.48x = 15,318.72 × 2,816.70
  4. Step 4: Simplify right side
    10,212.48x = 43,148,238.62
  5. Step 5: Solve for x
    x = 43,148,238.62/10,212.48
  6. Step 6: Final answer
    x = 4,225.05

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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.