Home / 28,307.87-42,462.21-10,778.66

Finding the Fourth Proportional to 28,307.87, 42,462.21 and 10,778.66

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Solution

The fourth proportional to 28,307.87, 42,462.21 and 10,778.66 is: 16,168.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,307.87 : 42,462.21 = 10,778.66 : x
  2. Step 2: Convert to fraction form
    28,307.87/42,462.21 = 10,778.66/x
  3. Step 3: Cross multiply
    28,307.87x = 42,462.21 × 10,778.66
  4. Step 4: Simplify right side
    28,307.87x = 457,685,512.13
  5. Step 5: Solve for x
    x = 457,685,512.13/28,307.87
  6. Step 6: Final answer
    x = 16,168.14

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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.