Home / 21,657.22-29,886.12-13,595.21

Finding the Fourth Proportional to 21,657.22, 29,886.12 and 13,595.21

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Solution

The fourth proportional to 21,657.22, 29,886.12 and 13,595.21 is: 18,760.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,657.22 : 29,886.12 = 13,595.21 : x
  2. Step 2: Convert to fraction form
    21,657.22/29,886.12 = 13,595.21/x
  3. Step 3: Cross multiply
    21,657.22x = 29,886.12 × 13,595.21
  4. Step 4: Simplify right side
    21,657.22x = 406,308,077.49
  5. Step 5: Solve for x
    x = 406,308,077.49/21,657.22
  6. Step 6: Final answer
    x = 18,760.86

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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.