Home / 20,903.01-31,354.18-8,422.74

Finding the Fourth Proportional to 20,903.01, 31,354.18 and 8,422.74

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Solution

The fourth proportional to 20,903.01, 31,354.18 and 8,422.74 is: 12,633.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.01 : 31,354.18 = 8,422.74 : x
  2. Step 2: Convert to fraction form
    20,903.01/31,354.18 = 8,422.74/x
  3. Step 3: Cross multiply
    20,903.01x = 31,354.18 × 8,422.74
  4. Step 4: Simplify right side
    20,903.01x = 264,088,106.05
  5. Step 5: Solve for x
    x = 264,088,106.05/20,903.01
  6. Step 6: Final answer
    x = 12,633.98

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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.