Home / 31,415.96-47,098.02-12,935

Finding the Fourth Proportional to 31,415.96, 47,098.02 and 12,935

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Solution

The fourth proportional to 31,415.96, 47,098.02 and 12,935 is: 19,391.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,415.96 : 47,098.02 = 12,935 : x
  2. Step 2: Convert to fraction form
    31,415.96/47,098.02 = 12,935/x
  3. Step 3: Cross multiply
    31,415.96x = 47,098.02 × 12,935
  4. Step 4: Simplify right side
    31,415.96x = 609,212,888.70
  5. Step 5: Solve for x
    x = 609,212,888.70/31,415.96
  6. Step 6: Final answer
    x = 19,391.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.