Home / 21,617.64-29,836.98-13,654.80

Finding the Fourth Proportional to 21,617.64, 29,836.98 and 13,654.80

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Solution

The fourth proportional to 21,617.64, 29,836.98 and 13,654.80 is: 18,846.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,617.64 : 29,836.98 = 13,654.80 : x
  2. Step 2: Convert to fraction form
    21,617.64/29,836.98 = 13,654.80/x
  3. Step 3: Cross multiply
    21,617.64x = 29,836.98 × 13,654.80
  4. Step 4: Simplify right side
    21,617.64x = 407,417,994.50
  5. Step 5: Solve for x
    x = 407,417,994.50/21,617.64
  6. Step 6: Final answer
    x = 18,846.55

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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.