Home / 20,972.16-31,457.22-7,823.52

Finding the Fourth Proportional to 20,972.16, 31,457.22 and 7,823.52

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Solution

The fourth proportional to 20,972.16, 31,457.22 and 7,823.52 is: 11,734.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,972.16 : 31,457.22 = 7,823.52 : x
  2. Step 2: Convert to fraction form
    20,972.16/31,457.22 = 7,823.52/x
  3. Step 3: Cross multiply
    20,972.16x = 31,457.22 × 7,823.52
  4. Step 4: Simplify right side
    20,972.16x = 246,106,189.81
  5. Step 5: Solve for x
    x = 246,106,189.81/20,972.16
  6. Step 6: Final answer
    x = 11,734.90

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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.