Home / 10,151.07-15,228.25-3,129.45

Finding the Fourth Proportional to 10,151.07, 15,228.25 and 3,129.45

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Solution

The fourth proportional to 10,151.07, 15,228.25 and 3,129.45 is: 4,694.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,151.07 : 15,228.25 = 3,129.45 : x
  2. Step 2: Convert to fraction form
    10,151.07/15,228.25 = 3,129.45/x
  3. Step 3: Cross multiply
    10,151.07x = 15,228.25 × 3,129.45
  4. Step 4: Simplify right side
    10,151.07x = 47,655,978.64
  5. Step 5: Solve for x
    x = 47,655,978.64/10,151.07
  6. Step 6: Final answer
    x = 4,694.67

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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.