Home / 21,311.80-31,967.70-16,646.20

Finding the Fourth Proportional to 21,311.80, 31,967.70 and 16,646.20

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Solution

The fourth proportional to 21,311.80, 31,967.70 and 16,646.20 is: 24,969.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,311.80 : 31,967.70 = 16,646.20 : x
  2. Step 2: Convert to fraction form
    21,311.80/31,967.70 = 16,646.20/x
  3. Step 3: Cross multiply
    21,311.80x = 31,967.70 × 16,646.20
  4. Step 4: Simplify right side
    21,311.80x = 532,140,727.74
  5. Step 5: Solve for x
    x = 532,140,727.74/21,311.80
  6. Step 6: Final answer
    x = 24,969.30

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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.