Home / 31,211.30-46,828.77-18,740.04

Finding the Fourth Proportional to 31,211.30, 46,828.77 and 18,740.04

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Solution

The fourth proportional to 31,211.30, 46,828.77 and 18,740.04 is: 28,117.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,211.30 : 46,828.77 = 18,740.04 : x
  2. Step 2: Convert to fraction form
    31,211.30/46,828.77 = 18,740.04/x
  3. Step 3: Cross multiply
    31,211.30x = 46,828.77 × 18,740.04
  4. Step 4: Simplify right side
    31,211.30x = 877,573,022.95
  5. Step 5: Solve for x
    x = 877,573,022.95/31,211.30
  6. Step 6: Final answer
    x = 28,117.16

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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.