Home / 21,341.20-29,458.20-12,848.08

Finding the Fourth Proportional to 21,341.20, 29,458.20 and 12,848.08

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Solution

The fourth proportional to 21,341.20, 29,458.20 and 12,848.08 is: 17,734.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341.20 : 29,458.20 = 12,848.08 : x
  2. Step 2: Convert to fraction form
    21,341.20/29,458.20 = 12,848.08/x
  3. Step 3: Cross multiply
    21,341.20x = 29,458.20 × 12,848.08
  4. Step 4: Simplify right side
    21,341.20x = 378,481,310.26
  5. Step 5: Solve for x
    x = 378,481,310.26/21,341.20
  6. Step 6: Final answer
    x = 17,734.77

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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.