Home / 20,988.72-31,446.72-14,736.84

Finding the Fourth Proportional to 20,988.72, 31,446.72 and 14,736.84

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Solution

The fourth proportional to 20,988.72, 31,446.72 and 14,736.84 is: 22,079.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,988.72 : 31,446.72 = 14,736.84 : x
  2. Step 2: Convert to fraction form
    20,988.72/31,446.72 = 14,736.84/x
  3. Step 3: Cross multiply
    20,988.72x = 31,446.72 × 14,736.84
  4. Step 4: Simplify right side
    20,988.72x = 463,425,281.16
  5. Step 5: Solve for x
    x = 463,425,281.16/20,988.72
  6. Step 6: Final answer
    x = 22,079.73

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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.