Home / 21,603.84-32,382.72-9,121.28

Finding the Fourth Proportional to 21,603.84, 32,382.72 and 9,121.28

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Solution

The fourth proportional to 21,603.84, 32,382.72 and 9,121.28 is: 13,672.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,603.84 : 32,382.72 = 9,121.28 : x
  2. Step 2: Convert to fraction form
    21,603.84/32,382.72 = 9,121.28/x
  3. Step 3: Cross multiply
    21,603.84x = 32,382.72 × 9,121.28
  4. Step 4: Simplify right side
    21,603.84x = 295,371,856.28
  5. Step 5: Solve for x
    x = 295,371,856.28/21,603.84
  6. Step 6: Final answer
    x = 13,672.19

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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.