Home / 30,531.43-45,804.89-12,759.02

Finding the Fourth Proportional to 30,531.43, 45,804.89 and 12,759.02

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Solution

The fourth proportional to 30,531.43, 45,804.89 and 12,759.02 is: 19,141.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,531.43 : 45,804.89 = 12,759.02 : x
  2. Step 2: Convert to fraction form
    30,531.43/45,804.89 = 12,759.02/x
  3. Step 3: Cross multiply
    30,531.43x = 45,804.89 × 12,759.02
  4. Step 4: Simplify right side
    30,531.43x = 584,425,482.25
  5. Step 5: Solve for x
    x = 584,425,482.25/30,531.43
  6. Step 6: Final answer
    x = 19,141.77

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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.