Home / 21,701.79-29,947.59-12,270.51

Finding the Fourth Proportional to 21,701.79, 29,947.59 and 12,270.51

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Solution

The fourth proportional to 21,701.79, 29,947.59 and 12,270.51 is: 16,932.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,701.79 : 29,947.59 = 12,270.51 : x
  2. Step 2: Convert to fraction form
    21,701.79/29,947.59 = 12,270.51/x
  3. Step 3: Cross multiply
    21,701.79x = 29,947.59 × 12,270.51
  4. Step 4: Simplify right side
    21,701.79x = 367,472,202.57
  5. Step 5: Solve for x
    x = 367,472,202.57/21,701.79
  6. Step 6: Final answer
    x = 16,932.81

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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.