Home / 13,518.06-20,262.72-7,974

Finding the Fourth Proportional to 13,518.06, 20,262.72 and 7,974

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Solution

The fourth proportional to 13,518.06, 20,262.72 and 7,974 is: 11,952.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.06 : 20,262.72 = 7,974 : x
  2. Step 2: Convert to fraction form
    13,518.06/20,262.72 = 7,974/x
  3. Step 3: Cross multiply
    13,518.06x = 20,262.72 × 7,974
  4. Step 4: Simplify right side
    13,518.06x = 161,574,929.28
  5. Step 5: Solve for x
    x = 161,574,929.28/13,518.06
  6. Step 6: Final answer
    x = 11,952.52

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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.