Home / 28,658.60-43,003.59-11,129.12

Finding the Fourth Proportional to 28,658.60, 43,003.59 and 11,129.12

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Solution

The fourth proportional to 28,658.60, 43,003.59 and 11,129.12 is: 16,699.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,658.60 : 43,003.59 = 11,129.12 : x
  2. Step 2: Convert to fraction form
    28,658.60/43,003.59 = 11,129.12/x
  3. Step 3: Cross multiply
    28,658.60x = 43,003.59 × 11,129.12
  4. Step 4: Simplify right side
    28,658.60x = 478,592,113.54
  5. Step 5: Solve for x
    x = 478,592,113.54/28,658.60
  6. Step 6: Final answer
    x = 16,699.77

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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.