Home / 21,370.28-29,490.93-12,296.66

Finding the Fourth Proportional to 21,370.28, 29,490.93 and 12,296.66

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Solution

The fourth proportional to 21,370.28, 29,490.93 and 12,296.66 is: 16,969.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,370.28 : 29,490.93 = 12,296.66 : x
  2. Step 2: Convert to fraction form
    21,370.28/29,490.93 = 12,296.66/x
  3. Step 3: Cross multiply
    21,370.28x = 29,490.93 × 12,296.66
  4. Step 4: Simplify right side
    21,370.28x = 362,639,939.29
  5. Step 5: Solve for x
    x = 362,639,939.29/21,370.28
  6. Step 6: Final answer
    x = 16,969.36

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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.