Home / 23,042.90-31,800.80-12,972.17

Finding the Fourth Proportional to 23,042.90, 31,800.80 and 12,972.17

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Solution

The fourth proportional to 23,042.90, 31,800.80 and 12,972.17 is: 17,902.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,042.90 : 31,800.80 = 12,972.17 : x
  2. Step 2: Convert to fraction form
    23,042.90/31,800.80 = 12,972.17/x
  3. Step 3: Cross multiply
    23,042.90x = 31,800.80 × 12,972.17
  4. Step 4: Simplify right side
    23,042.90x = 412,525,495.67
  5. Step 5: Solve for x
    x = 412,525,495.67/23,042.90
  6. Step 6: Final answer
    x = 17,902.50

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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.