Home / 20,610.48-28,443.08-11,657.80

Finding the Fourth Proportional to 20,610.48, 28,443.08 and 11,657.80

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Solution

The fourth proportional to 20,610.48, 28,443.08 and 11,657.80 is: 16,088.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,610.48 : 28,443.08 = 11,657.80 : x
  2. Step 2: Convert to fraction form
    20,610.48/28,443.08 = 11,657.80/x
  3. Step 3: Cross multiply
    20,610.48x = 28,443.08 × 11,657.80
  4. Step 4: Simplify right side
    20,610.48x = 331,583,738.02
  5. Step 5: Solve for x
    x = 331,583,738.02/20,610.48
  6. Step 6: Final answer
    x = 16,088.11

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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.