Home / 31,821.93-43,910.98-18,397.51

Finding the Fourth Proportional to 31,821.93, 43,910.98 and 18,397.51

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Solution

The fourth proportional to 31,821.93, 43,910.98 and 18,397.51 is: 25,386.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,821.93 : 43,910.98 = 18,397.51 : x
  2. Step 2: Convert to fraction form
    31,821.93/43,910.98 = 18,397.51/x
  3. Step 3: Cross multiply
    31,821.93x = 43,910.98 × 18,397.51
  4. Step 4: Simplify right side
    31,821.93x = 807,852,537.89
  5. Step 5: Solve for x
    x = 807,852,537.89/31,821.93
  6. Step 6: Final answer
    x = 25,386.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.