Home / 28,726.56-43,066.55-12,920.02

Finding the Fourth Proportional to 28,726.56, 43,066.55 and 12,920.02

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Solution

The fourth proportional to 28,726.56, 43,066.55 and 12,920.02 is: 19,369.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,726.56 : 43,066.55 = 12,920.02 : x
  2. Step 2: Convert to fraction form
    28,726.56/43,066.55 = 12,920.02/x
  3. Step 3: Cross multiply
    28,726.56x = 43,066.55 × 12,920.02
  4. Step 4: Simplify right side
    28,726.56x = 556,420,611.96
  5. Step 5: Solve for x
    x = 556,420,611.96/28,726.56
  6. Step 6: Final answer
    x = 19,369.55

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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.