Home / 20,587.64-30,888.81-8,100.74

Finding the Fourth Proportional to 20,587.64, 30,888.81 and 8,100.74

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Solution

The fourth proportional to 20,587.64, 30,888.81 and 8,100.74 is: 12,154.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,587.64 : 30,888.81 = 8,100.74 : x
  2. Step 2: Convert to fraction form
    20,587.64/30,888.81 = 8,100.74/x
  3. Step 3: Cross multiply
    20,587.64x = 30,888.81 × 8,100.74
  4. Step 4: Simplify right side
    20,587.64x = 250,222,295.94
  5. Step 5: Solve for x
    x = 250,222,295.94/20,587.64
  6. Step 6: Final answer
    x = 12,154.01

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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.