Home / 21,081.80-31,622.70-16,416.20

Finding the Fourth Proportional to 21,081.80, 31,622.70 and 16,416.20

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Solution

The fourth proportional to 21,081.80, 31,622.70 and 16,416.20 is: 24,624.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081.80 : 31,622.70 = 16,416.20 : x
  2. Step 2: Convert to fraction form
    21,081.80/31,622.70 = 16,416.20/x
  3. Step 3: Cross multiply
    21,081.80x = 31,622.70 × 16,416.20
  4. Step 4: Simplify right side
    21,081.80x = 519,124,567.74
  5. Step 5: Solve for x
    x = 519,124,567.74/21,081.80
  6. Step 6: Final answer
    x = 24,624.30

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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.