Home / 21,210.96-29,272.08-12,714.47

Finding the Fourth Proportional to 21,210.96, 29,272.08 and 12,714.47

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Solution

The fourth proportional to 21,210.96, 29,272.08 and 12,714.47 is: 17,546.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.96 : 29,272.08 = 12,714.47 : x
  2. Step 2: Convert to fraction form
    21,210.96/29,272.08 = 12,714.47/x
  3. Step 3: Cross multiply
    21,210.96x = 29,272.08 × 12,714.47
  4. Step 4: Simplify right side
    21,210.96x = 372,178,994.09
  5. Step 5: Solve for x
    x = 372,178,994.09/21,210.96
  6. Step 6: Final answer
    x = 17,546.54

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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.