Home / 21,715.24-29,968.48-12,155.97

Finding the Fourth Proportional to 21,715.24, 29,968.48 and 12,155.97

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Solution

The fourth proportional to 21,715.24, 29,968.48 and 12,155.97 is: 16,776.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,715.24 : 29,968.48 = 12,155.97 : x
  2. Step 2: Convert to fraction form
    21,715.24/29,968.48 = 12,155.97/x
  3. Step 3: Cross multiply
    21,715.24x = 29,968.48 × 12,155.97
  4. Step 4: Simplify right side
    21,715.24x = 364,296,071.40
  5. Step 5: Solve for x
    x = 364,296,071.40/21,715.24
  6. Step 6: Final answer
    x = 16,776.06

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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.