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Finding the Fourth Proportional to 31,590, 43,594.20 and 19,017.18

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Solution

The fourth proportional to 31,590, 43,594.20 and 19,017.18 is: 26,243.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,590 : 43,594.20 = 19,017.18 : x
  2. Step 2: Convert to fraction form
    31,590/43,594.20 = 19,017.18/x
  3. Step 3: Cross multiply
    31,590x = 43,594.20 × 19,017.18
  4. Step 4: Simplify right side
    31,590x = 829,038,748.36
  5. Step 5: Solve for x
    x = 829,038,748.36/31,590
  6. Step 6: Final answer
    x = 26,243.71

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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.