Home / 31,384.89-43,312.19-17,239.05

Finding the Fourth Proportional to 31,384.89, 43,312.19 and 17,239.05

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Solution

The fourth proportional to 31,384.89, 43,312.19 and 17,239.05 is: 23,790.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,384.89 : 43,312.19 = 17,239.05 : x
  2. Step 2: Convert to fraction form
    31,384.89/43,312.19 = 17,239.05/x
  3. Step 3: Cross multiply
    31,384.89x = 43,312.19 × 17,239.05
  4. Step 4: Simplify right side
    31,384.89x = 746,660,922.82
  5. Step 5: Solve for x
    x = 746,660,922.82/31,384.89
  6. Step 6: Final answer
    x = 23,790.46

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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.