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Finding the Fourth Proportional to 23,959.99, 35,885.31 and 21,156.99

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Solution

The fourth proportional to 23,959.99, 35,885.31 and 21,156.99 is: 31,687.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,959.99 : 35,885.31 = 21,156.99 : x
  2. Step 2: Convert to fraction form
    23,959.99/35,885.31 = 21,156.99/x
  3. Step 3: Cross multiply
    23,959.99x = 35,885.31 × 21,156.99
  4. Step 4: Simplify right side
    23,959.99x = 759,225,144.82
  5. Step 5: Solve for x
    x = 759,225,144.82/23,959.99
  6. Step 6: Final answer
    x = 31,687.21

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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.