Home / 21,681.18-32,565.48-12,933.18

Finding the Fourth Proportional to 21,681.18, 32,565.48 and 12,933.18

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Solution

The fourth proportional to 21,681.18, 32,565.48 and 12,933.18 is: 19,425.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,681.18 : 32,565.48 = 12,933.18 : x
  2. Step 2: Convert to fraction form
    21,681.18/32,565.48 = 12,933.18/x
  3. Step 3: Cross multiply
    21,681.18x = 32,565.48 × 12,933.18
  4. Step 4: Simplify right side
    21,681.18x = 421,175,214.63
  5. Step 5: Solve for x
    x = 421,175,214.63/21,681.18
  6. Step 6: Final answer
    x = 19,425.84

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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.