Home / 28,911.10-43,345.05-15,778.30

Finding the Fourth Proportional to 28,911.10, 43,345.05 and 15,778.30

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Solution

The fourth proportional to 28,911.10, 43,345.05 and 15,778.30 is: 23,655.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,911.10 : 43,345.05 = 15,778.30 : x
  2. Step 2: Convert to fraction form
    28,911.10/43,345.05 = 15,778.30/x
  3. Step 3: Cross multiply
    28,911.10x = 43,345.05 × 15,778.30
  4. Step 4: Simplify right side
    28,911.10x = 683,911,202.42
  5. Step 5: Solve for x
    x = 683,911,202.42/28,911.10
  6. Step 6: Final answer
    x = 23,655.66

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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.