Home / 31,928.65-47,892.98-13,188.09

Finding the Fourth Proportional to 31,928.65, 47,892.98 and 13,188.09

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Solution

The fourth proportional to 31,928.65, 47,892.98 and 13,188.09 is: 19,782.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,928.65 : 47,892.98 = 13,188.09 : x
  2. Step 2: Convert to fraction form
    31,928.65/47,892.98 = 13,188.09/x
  3. Step 3: Cross multiply
    31,928.65x = 47,892.98 × 13,188.09
  4. Step 4: Simplify right side
    31,928.65x = 631,616,783.98
  5. Step 5: Solve for x
    x = 631,616,783.98/31,928.65
  6. Step 6: Final answer
    x = 19,782.13

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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.