Home / 21,972.32-30,322.32-12,541.76

Finding the Fourth Proportional to 21,972.32, 30,322.32 and 12,541.76

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Solution

The fourth proportional to 21,972.32, 30,322.32 and 12,541.76 is: 17,307.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,972.32 : 30,322.32 = 12,541.76 : x
  2. Step 2: Convert to fraction form
    21,972.32/30,322.32 = 12,541.76/x
  3. Step 3: Cross multiply
    21,972.32x = 30,322.32 × 12,541.76
  4. Step 4: Simplify right side
    21,972.32x = 380,295,260.08
  5. Step 5: Solve for x
    x = 380,295,260.08/21,972.32
  6. Step 6: Final answer
    x = 17,307.92

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