Home / 15,538.28-21,443.06-8,464.70

Finding the Fourth Proportional to 15,538.28, 21,443.06 and 8,464.70

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Solution

The fourth proportional to 15,538.28, 21,443.06 and 8,464.70 is: 11,681.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,538.28 : 21,443.06 = 8,464.70 : x
  2. Step 2: Convert to fraction form
    15,538.28/21,443.06 = 8,464.70/x
  3. Step 3: Cross multiply
    15,538.28x = 21,443.06 × 8,464.70
  4. Step 4: Simplify right side
    15,538.28x = 181,509,069.98
  5. Step 5: Solve for x
    x = 181,509,069.98/15,538.28
  6. Step 6: Final answer
    x = 11,681.41

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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.