Home / 22,821.02-31,491.20-12,748.67

Finding the Fourth Proportional to 22,821.02, 31,491.20 and 12,748.67

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Solution

The fourth proportional to 22,821.02, 31,491.20 and 12,748.67 is: 17,592.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,821.02 : 31,491.20 = 12,748.67 : x
  2. Step 2: Convert to fraction form
    22,821.02/31,491.20 = 12,748.67/x
  3. Step 3: Cross multiply
    22,821.02x = 31,491.20 × 12,748.67
  4. Step 4: Simplify right side
    22,821.02x = 401,470,791.12
  5. Step 5: Solve for x
    x = 401,470,791.12/22,821.02
  6. Step 6: Final answer
    x = 17,592.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.