Home / 19,901.08-27,454.30-12,829.78

Finding the Fourth Proportional to 19,901.08, 27,454.30 and 12,829.78

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Solution

The fourth proportional to 19,901.08, 27,454.30 and 12,829.78 is: 17,699.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,901.08 : 27,454.30 = 12,829.78 : x
  2. Step 2: Convert to fraction form
    19,901.08/27,454.30 = 12,829.78/x
  3. Step 3: Cross multiply
    19,901.08x = 27,454.30 × 12,829.78
  4. Step 4: Simplify right side
    19,901.08x = 352,232,629.05
  5. Step 5: Solve for x
    x = 352,232,629.05/19,901.08
  6. Step 6: Final answer
    x = 17,699.17

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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.