Home / 23,099.87-31,877.80-12,489.51

Finding the Fourth Proportional to 23,099.87, 31,877.80 and 12,489.51

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Solution

The fourth proportional to 23,099.87, 31,877.80 and 12,489.51 is: 17,235.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,099.87 : 31,877.80 = 12,489.51 : x
  2. Step 2: Convert to fraction form
    23,099.87/31,877.80 = 12,489.51/x
  3. Step 3: Cross multiply
    23,099.87x = 31,877.80 × 12,489.51
  4. Step 4: Simplify right side
    23,099.87x = 398,138,070.65
  5. Step 5: Solve for x
    x = 398,138,070.65/23,099.87
  6. Step 6: Final answer
    x = 17,235.52

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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.