Home / 23,051.75-31,808.84-12,981.35

Finding the Fourth Proportional to 23,051.75, 31,808.84 and 12,981.35

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Solution

The fourth proportional to 23,051.75, 31,808.84 and 12,981.35 is: 17,912.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,051.75 : 31,808.84 = 12,981.35 : x
  2. Step 2: Convert to fraction form
    23,051.75/31,808.84 = 12,981.35/x
  3. Step 3: Cross multiply
    23,051.75x = 31,808.84 × 12,981.35
  4. Step 4: Simplify right side
    23,051.75x = 412,921,699.75
  5. Step 5: Solve for x
    x = 412,921,699.75/23,051.75
  6. Step 6: Final answer
    x = 17,912.82

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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.