Home / 21,703.09-29,947.08-12,753.49

Finding the Fourth Proportional to 21,703.09, 29,947.08 and 12,753.49

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Solution

The fourth proportional to 21,703.09, 29,947.08 and 12,753.49 is: 17,597.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,703.09 : 29,947.08 = 12,753.49 : x
  2. Step 2: Convert to fraction form
    21,703.09/29,947.08 = 12,753.49/x
  3. Step 3: Cross multiply
    21,703.09x = 29,947.08 × 12,753.49
  4. Step 4: Simplify right side
    21,703.09x = 381,929,785.31
  5. Step 5: Solve for x
    x = 381,929,785.31/21,703.09
  6. Step 6: Final answer
    x = 17,597.95

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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.