Home / 30,541.43-45,783.95-21,185.85

Finding the Fourth Proportional to 30,541.43, 45,783.95 and 21,185.85

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Solution

The fourth proportional to 30,541.43, 45,783.95 and 21,185.85 is: 31,759.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,541.43 : 45,783.95 = 21,185.85 : x
  2. Step 2: Convert to fraction form
    30,541.43/45,783.95 = 21,185.85/x
  3. Step 3: Cross multiply
    30,541.43x = 45,783.95 × 21,185.85
  4. Step 4: Simplify right side
    30,541.43x = 969,971,897.11
  5. Step 5: Solve for x
    x = 969,971,897.11/30,541.43
  6. Step 6: Final answer
    x = 31,759.22

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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.