Home / 20,266.08-30,381.36-8,587.68

Finding the Fourth Proportional to 20,266.08, 30,381.36 and 8,587.68

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Solution

The fourth proportional to 20,266.08, 30,381.36 and 8,587.68 is: 12,873.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,266.08 : 30,381.36 = 8,587.68 : x
  2. Step 2: Convert to fraction form
    20,266.08/30,381.36 = 8,587.68/x
  3. Step 3: Cross multiply
    20,266.08x = 30,381.36 × 8,587.68
  4. Step 4: Simplify right side
    20,266.08x = 260,905,397.64
  5. Step 5: Solve for x
    x = 260,905,397.64/20,266.08
  6. Step 6: Final answer
    x = 12,873.99

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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.