Home / 21,637.28-29,862.56-12,206.72

Finding the Fourth Proportional to 21,637.28, 29,862.56 and 12,206.72

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Solution

The fourth proportional to 21,637.28, 29,862.56 and 12,206.72 is: 16,847.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,637.28 : 29,862.56 = 12,206.72 : x
  2. Step 2: Convert to fraction form
    21,637.28/29,862.56 = 12,206.72/x
  3. Step 3: Cross multiply
    21,637.28x = 29,862.56 × 12,206.72
  4. Step 4: Simplify right side
    21,637.28x = 364,523,908.40
  5. Step 5: Solve for x
    x = 364,523,908.40/21,637.28
  6. Step 6: Final answer
    x = 16,847.03

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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.