Home / 21,304.46-29,390.72-12,801.64

Finding the Fourth Proportional to 21,304.46, 29,390.72 and 12,801.64

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Solution

The fourth proportional to 21,304.46, 29,390.72 and 12,801.64 is: 17,660.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,304.46 : 29,390.72 = 12,801.64 : x
  2. Step 2: Convert to fraction form
    21,304.46/29,390.72 = 12,801.64/x
  3. Step 3: Cross multiply
    21,304.46x = 29,390.72 × 12,801.64
  4. Step 4: Simplify right side
    21,304.46x = 376,249,340.74
  5. Step 5: Solve for x
    x = 376,249,340.74/21,304.46
  6. Step 6: Final answer
    x = 17,660.59

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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.