Home / 21,118.32-29,133.54-13,562.64

Finding the Fourth Proportional to 21,118.32, 29,133.54 and 13,562.64

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Solution

The fourth proportional to 21,118.32, 29,133.54 and 13,562.64 is: 18,710.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,118.32 : 29,133.54 = 13,562.64 : x
  2. Step 2: Convert to fraction form
    21,118.32/29,133.54 = 13,562.64/x
  3. Step 3: Cross multiply
    21,118.32x = 29,133.54 × 13,562.64
  4. Step 4: Simplify right side
    21,118.32x = 395,127,714.95
  5. Step 5: Solve for x
    x = 395,127,714.95/21,118.32
  6. Step 6: Final answer
    x = 18,710.19

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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.