Home / 21,507.41-29,675.04-12,549.80

Finding the Fourth Proportional to 21,507.41, 29,675.04 and 12,549.80

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Solution

The fourth proportional to 21,507.41, 29,675.04 and 12,549.80 is: 17,315.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,507.41 : 29,675.04 = 12,549.80 : x
  2. Step 2: Convert to fraction form
    21,507.41/29,675.04 = 12,549.80/x
  3. Step 3: Cross multiply
    21,507.41x = 29,675.04 × 12,549.80
  4. Step 4: Simplify right side
    21,507.41x = 372,415,844.12
  5. Step 5: Solve for x
    x = 372,415,844.12/21,507.41
  6. Step 6: Final answer
    x = 17,315.70

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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.