Home / 20,742.84-31,099.58-9,637.72

Finding the Fourth Proportional to 20,742.84, 31,099.58 and 9,637.72

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Solution

The fourth proportional to 20,742.84, 31,099.58 and 9,637.72 is: 14,449.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.84 : 31,099.58 = 9,637.72 : x
  2. Step 2: Convert to fraction form
    20,742.84/31,099.58 = 9,637.72/x
  3. Step 3: Cross multiply
    20,742.84x = 31,099.58 × 9,637.72
  4. Step 4: Simplify right side
    20,742.84x = 299,729,044.16
  5. Step 5: Solve for x
    x = 299,729,044.16/20,742.84
  6. Step 6: Final answer
    x = 14,449.76

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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.