Home / 21,708.90-29,955.66-12,754.38

Finding the Fourth Proportional to 21,708.90, 29,955.66 and 12,754.38

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Solution

The fourth proportional to 21,708.90, 29,955.66 and 12,754.38 is: 17,599.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,708.90 : 29,955.66 = 12,754.38 : x
  2. Step 2: Convert to fraction form
    21,708.90/29,955.66 = 12,754.38/x
  3. Step 3: Cross multiply
    21,708.90x = 29,955.66 × 12,754.38
  4. Step 4: Simplify right side
    21,708.90x = 382,065,870.79
  5. Step 5: Solve for x
    x = 382,065,870.79/21,708.90
  6. Step 6: Final answer
    x = 17,599.50

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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.