Home / 20,697.20-31,045.80-14,044.40

Finding the Fourth Proportional to 20,697.20, 31,045.80 and 14,044.40

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Solution

The fourth proportional to 20,697.20, 31,045.80 and 14,044.40 is: 21,066.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,697.20 : 31,045.80 = 14,044.40 : x
  2. Step 2: Convert to fraction form
    20,697.20/31,045.80 = 14,044.40/x
  3. Step 3: Cross multiply
    20,697.20x = 31,045.80 × 14,044.40
  4. Step 4: Simplify right side
    20,697.20x = 436,019,633.52
  5. Step 5: Solve for x
    x = 436,019,633.52/20,697.20
  6. Step 6: Final answer
    x = 21,066.60

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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.