Home / 20,981.70-31,449.06-16,071.48

Finding the Fourth Proportional to 20,981.70, 31,449.06 and 16,071.48

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Solution

The fourth proportional to 20,981.70, 31,449.06 and 16,071.48 is: 24,089.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,981.70 : 31,449.06 = 16,071.48 : x
  2. Step 2: Convert to fraction form
    20,981.70/31,449.06 = 16,071.48/x
  3. Step 3: Cross multiply
    20,981.70x = 31,449.06 × 16,071.48
  4. Step 4: Simplify right side
    20,981.70x = 505,432,938.81
  5. Step 5: Solve for x
    x = 505,432,938.81/20,981.70
  6. Step 6: Final answer
    x = 24,089.23

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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.