Home / 21,561.68-29,746.67-15,910.00

Finding the Fourth Proportional to 21,561.68, 29,746.67 and 15,910.00

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Solution

The fourth proportional to 21,561.68, 29,746.67 and 15,910.00 is: 21,949.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,561.68 : 29,746.67 = 15,910.00 : x
  2. Step 2: Convert to fraction form
    21,561.68/29,746.67 = 15,910.00/x
  3. Step 3: Cross multiply
    21,561.68x = 29,746.67 × 15,910.00
  4. Step 4: Simplify right side
    21,561.68x = 473,269,365.78
  5. Step 5: Solve for x
    x = 473,269,365.78/21,561.68
  6. Step 6: Final answer
    x = 21,949.56

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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.