Home / 21,012.59-31,396.96-15,913.24

Finding the Fourth Proportional to 21,012.59, 31,396.96 and 15,913.24

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Solution

The fourth proportional to 21,012.59, 31,396.96 and 15,913.24 is: 23,777.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,012.59 : 31,396.96 = 15,913.24 : x
  2. Step 2: Convert to fraction form
    21,012.59/31,396.96 = 15,913.24/x
  3. Step 3: Cross multiply
    21,012.59x = 31,396.96 × 15,913.24
  4. Step 4: Simplify right side
    21,012.59x = 499,627,359.75
  5. Step 5: Solve for x
    x = 499,627,359.75/21,012.59
  6. Step 6: Final answer
    x = 23,777.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.