Home / 15,056.38-20,776.01-8,685.05

Finding the Fourth Proportional to 15,056.38, 20,776.01 and 8,685.05

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Solution

The fourth proportional to 15,056.38, 20,776.01 and 8,685.05 is: 11,984.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,056.38 : 20,776.01 = 8,685.05 : x
  2. Step 2: Convert to fraction form
    15,056.38/20,776.01 = 8,685.05/x
  3. Step 3: Cross multiply
    15,056.38x = 20,776.01 × 8,685.05
  4. Step 4: Simplify right side
    15,056.38x = 180,440,694.17
  5. Step 5: Solve for x
    x = 180,440,694.17/15,056.38
  6. Step 6: Final answer
    x = 11,984.34

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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.