Home / 31,986.21-47,971.47-14,207.07

Finding the Fourth Proportional to 31,986.21, 47,971.47 and 14,207.07

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Solution

The fourth proportional to 31,986.21, 47,971.47 and 14,207.07 is: 21,307.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,986.21 : 47,971.47 = 14,207.07 : x
  2. Step 2: Convert to fraction form
    31,986.21/47,971.47 = 14,207.07/x
  3. Step 3: Cross multiply
    31,986.21x = 47,971.47 × 14,207.07
  4. Step 4: Simplify right side
    31,986.21x = 681,534,032.29
  5. Step 5: Solve for x
    x = 681,534,032.29/31,986.21
  6. Step 6: Final answer
    x = 21,307.12

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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.