Home / 15,727.28-21,705.76-10,154.48

Finding the Fourth Proportional to 15,727.28, 21,705.76 and 10,154.48

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Solution

The fourth proportional to 15,727.28, 21,705.76 and 10,154.48 is: 14,014.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,727.28 : 21,705.76 = 10,154.48 : x
  2. Step 2: Convert to fraction form
    15,727.28/21,705.76 = 10,154.48/x
  3. Step 3: Cross multiply
    15,727.28x = 21,705.76 × 10,154.48
  4. Step 4: Simplify right side
    15,727.28x = 220,410,705.80
  5. Step 5: Solve for x
    x = 220,410,705.80/15,727.28
  6. Step 6: Final answer
    x = 14,014.55

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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.