Home / 21,781.20-32,675.40-19,577.16

Finding the Fourth Proportional to 21,781.20, 32,675.40 and 19,577.16

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Solution

The fourth proportional to 21,781.20, 32,675.40 and 19,577.16 is: 29,368.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,781.20 : 32,675.40 = 19,577.16 : x
  2. Step 2: Convert to fraction form
    21,781.20/32,675.40 = 19,577.16/x
  3. Step 3: Cross multiply
    21,781.20x = 32,675.40 × 19,577.16
  4. Step 4: Simplify right side
    21,781.20x = 639,691,533.86
  5. Step 5: Solve for x
    x = 639,691,533.86/21,781.20
  6. Step 6: Final answer
    x = 29,368.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.