Home / 31,396.88-43,328.62-17,972.45

Finding the Fourth Proportional to 31,396.88, 43,328.62 and 17,972.45

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Solution

The fourth proportional to 31,396.88, 43,328.62 and 17,972.45 is: 24,802.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,396.88 : 43,328.62 = 17,972.45 : x
  2. Step 2: Convert to fraction form
    31,396.88/43,328.62 = 17,972.45/x
  3. Step 3: Cross multiply
    31,396.88x = 43,328.62 × 17,972.45
  4. Step 4: Simplify right side
    31,396.88x = 778,721,424.82
  5. Step 5: Solve for x
    x = 778,721,424.82/31,396.88
  6. Step 6: Final answer
    x = 24,802.51

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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.