Home / 21,153.56-29,182.51-13,598.48

Finding the Fourth Proportional to 21,153.56, 29,182.51 and 13,598.48

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Solution

The fourth proportional to 21,153.56, 29,182.51 and 13,598.48 is: 18,759.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.56 : 29,182.51 = 13,598.48 : x
  2. Step 2: Convert to fraction form
    21,153.56/29,182.51 = 13,598.48/x
  3. Step 3: Cross multiply
    21,153.56x = 29,182.51 × 13,598.48
  4. Step 4: Simplify right side
    21,153.56x = 396,837,868.54
  5. Step 5: Solve for x
    x = 396,837,868.54/21,153.56
  6. Step 6: Final answer
    x = 18,759.87

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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.