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Finding the Fourth Proportional to 31,393.90, 43,323.90 and 17,053.86

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Solution

The fourth proportional to 31,393.90, 43,323.90 and 17,053.86 is: 23,534.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,393.90 : 43,323.90 = 17,053.86 : x
  2. Step 2: Convert to fraction form
    31,393.90/43,323.90 = 17,053.86/x
  3. Step 3: Cross multiply
    31,393.90x = 43,323.90 × 17,053.86
  4. Step 4: Simplify right side
    31,393.90x = 738,839,580.07
  5. Step 5: Solve for x
    x = 738,839,580.07/31,393.90
  6. Step 6: Final answer
    x = 23,534.50

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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.