Home / 21,715.52-29,967.84-12,284.48

Finding the Fourth Proportional to 21,715.52, 29,967.84 and 12,284.48

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Solution

The fourth proportional to 21,715.52, 29,967.84 and 12,284.48 is: 16,952.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,715.52 : 29,967.84 = 12,284.48 : x
  2. Step 2: Convert to fraction form
    21,715.52/29,967.84 = 12,284.48/x
  3. Step 3: Cross multiply
    21,715.52x = 29,967.84 × 12,284.48
  4. Step 4: Simplify right side
    21,715.52x = 368,139,331.12
  5. Step 5: Solve for x
    x = 368,139,331.12/21,715.52
  6. Step 6: Final answer
    x = 16,952.82

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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.