Home / 15,603.97-21,528.63-9,231.28

Finding the Fourth Proportional to 15,603.97, 21,528.63 and 9,231.28

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Solution

The fourth proportional to 15,603.97, 21,528.63 and 9,231.28 is: 12,736.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,603.97 : 21,528.63 = 9,231.28 : x
  2. Step 2: Convert to fraction form
    15,603.97/21,528.63 = 9,231.28/x
  3. Step 3: Cross multiply
    15,603.97x = 21,528.63 × 9,231.28
  4. Step 4: Simplify right side
    15,603.97x = 198,736,811.55
  5. Step 5: Solve for x
    x = 198,736,811.55/15,603.97
  6. Step 6: Final answer
    x = 12,736.30

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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.