Home / 20,610.40-28,442.87-11,657.47

Finding the Fourth Proportional to 20,610.40, 28,442.87 and 11,657.47

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Solution

The fourth proportional to 20,610.40, 28,442.87 and 11,657.47 is: 16,087.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,610.40 : 28,442.87 = 11,657.47 : x
  2. Step 2: Convert to fraction form
    20,610.40/28,442.87 = 11,657.47/x
  3. Step 3: Cross multiply
    20,610.40x = 28,442.87 × 11,657.47
  4. Step 4: Simplify right side
    20,610.40x = 331,571,903.74
  5. Step 5: Solve for x
    x = 331,571,903.74/20,610.40
  6. Step 6: Final answer
    x = 16,087.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.