Home / 21,787.17-32,667.59-9,777.13

Finding the Fourth Proportional to 21,787.17, 32,667.59 and 9,777.13

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Solution

The fourth proportional to 21,787.17, 32,667.59 and 9,777.13 is: 14,659.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,787.17 : 32,667.59 = 9,777.13 : x
  2. Step 2: Convert to fraction form
    21,787.17/32,667.59 = 9,777.13/x
  3. Step 3: Cross multiply
    21,787.17x = 32,667.59 × 9,777.13
  4. Step 4: Simplify right side
    21,787.17x = 319,395,274.22
  5. Step 5: Solve for x
    x = 319,395,274.22/21,787.17
  6. Step 6: Final answer
    x = 14,659.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.