Home / 21,091.50-29,106.75-13,652.46

Finding the Fourth Proportional to 21,091.50, 29,106.75 and 13,652.46

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Solution

The fourth proportional to 21,091.50, 29,106.75 and 13,652.46 is: 18,840.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,091.50 : 29,106.75 = 13,652.46 : x
  2. Step 2: Convert to fraction form
    21,091.50/29,106.75 = 13,652.46/x
  3. Step 3: Cross multiply
    21,091.50x = 29,106.75 × 13,652.46
  4. Step 4: Simplify right side
    21,091.50x = 397,378,740.11
  5. Step 5: Solve for x
    x = 397,378,740.11/21,091.50
  6. Step 6: Final answer
    x = 18,840.71

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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.