Home / 21,311.08-31,966.88-8,164.24

Finding the Fourth Proportional to 21,311.08, 31,966.88 and 8,164.24

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Solution

The fourth proportional to 21,311.08, 31,966.88 and 8,164.24 is: 12,246.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,311.08 : 31,966.88 = 8,164.24 : x
  2. Step 2: Convert to fraction form
    21,311.08/31,966.88 = 8,164.24/x
  3. Step 3: Cross multiply
    21,311.08x = 31,966.88 × 8,164.24
  4. Step 4: Simplify right side
    21,311.08x = 260,985,280.37
  5. Step 5: Solve for x
    x = 260,985,280.37/21,311.08
  6. Step 6: Final answer
    x = 12,246.46

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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.