Home / 21,454.58-29,602.49-12,958.08

Finding the Fourth Proportional to 21,454.58, 29,602.49 and 12,958.08

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Solution

The fourth proportional to 21,454.58, 29,602.49 and 12,958.08 is: 17,879.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,454.58 : 29,602.49 = 12,958.08 : x
  2. Step 2: Convert to fraction form
    21,454.58/29,602.49 = 12,958.08/x
  3. Step 3: Cross multiply
    21,454.58x = 29,602.49 × 12,958.08
  4. Step 4: Simplify right side
    21,454.58x = 383,591,368.83
  5. Step 5: Solve for x
    x = 383,591,368.83/21,454.58
  6. Step 6: Final answer
    x = 17,879.23

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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.