Home / 21,738.96-29,966.76-17,915.76

Finding the Fourth Proportional to 21,738.96, 29,966.76 and 17,915.76

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Solution

The fourth proportional to 21,738.96, 29,966.76 and 17,915.76 is: 24,696.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,738.96 : 29,966.76 = 17,915.76 : x
  2. Step 2: Convert to fraction form
    21,738.96/29,966.76 = 17,915.76/x
  3. Step 3: Cross multiply
    21,738.96x = 29,966.76 × 17,915.76
  4. Step 4: Simplify right side
    21,738.96x = 536,877,280.14
  5. Step 5: Solve for x
    x = 536,877,280.14/21,738.96
  6. Step 6: Final answer
    x = 24,696.55

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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.