Home / 21,731.14-29,988.93-12,300.58

Finding the Fourth Proportional to 21,731.14, 29,988.93 and 12,300.58

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Solution

The fourth proportional to 21,731.14, 29,988.93 and 12,300.58 is: 16,974.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,731.14 : 29,988.93 = 12,300.58 : x
  2. Step 2: Convert to fraction form
    21,731.14/29,988.93 = 12,300.58/x
  3. Step 3: Cross multiply
    21,731.14x = 29,988.93 × 12,300.58
  4. Step 4: Simplify right side
    21,731.14x = 368,881,232.58
  5. Step 5: Solve for x
    x = 368,881,232.58/21,731.14
  6. Step 6: Final answer
    x = 16,974.78

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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.