Home / 21,043.18-31,505.84-15,852.70

Finding the Fourth Proportional to 21,043.18, 31,505.84 and 15,852.70

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Solution

The fourth proportional to 21,043.18, 31,505.84 and 15,852.70 is: 23,734.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,043.18 : 31,505.84 = 15,852.70 : x
  2. Step 2: Convert to fraction form
    21,043.18/31,505.84 = 15,852.70/x
  3. Step 3: Cross multiply
    21,043.18x = 31,505.84 × 15,852.70
  4. Step 4: Simplify right side
    21,043.18x = 499,452,629.77
  5. Step 5: Solve for x
    x = 499,452,629.77/21,043.18
  6. Step 6: Final answer
    x = 23,734.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.