Home / 21,738.49-29,999.06-12,307.93

Finding the Fourth Proportional to 21,738.49, 29,999.06 and 12,307.93

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Solution

The fourth proportional to 21,738.49, 29,999.06 and 12,307.93 is: 16,984.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,738.49 : 29,999.06 = 12,307.93 : x
  2. Step 2: Convert to fraction form
    21,738.49/29,999.06 = 12,307.93/x
  3. Step 3: Cross multiply
    21,738.49x = 29,999.06 × 12,307.93
  4. Step 4: Simplify right side
    21,738.49x = 369,226,286.32
  5. Step 5: Solve for x
    x = 369,226,286.32/21,738.49
  6. Step 6: Final answer
    x = 16,984.91

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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.