Home / 31,415.72-43,355.74-19,486.98

Finding the Fourth Proportional to 31,415.72, 43,355.74 and 19,486.98

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Solution

The fourth proportional to 31,415.72, 43,355.74 and 19,486.98 is: 26,893.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,415.72 : 43,355.74 = 19,486.98 : x
  2. Step 2: Convert to fraction form
    31,415.72/43,355.74 = 19,486.98/x
  3. Step 3: Cross multiply
    31,415.72x = 43,355.74 × 19,486.98
  4. Step 4: Simplify right side
    31,415.72x = 844,872,438.27
  5. Step 5: Solve for x
    x = 844,872,438.27/31,415.72
  6. Step 6: Final answer
    x = 26,893.30

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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.