Home / 31,386.36-47,079.53-11,669.88

Finding the Fourth Proportional to 31,386.36, 47,079.53 and 11,669.88

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Solution

The fourth proportional to 31,386.36, 47,079.53 and 11,669.88 is: 17,504.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,386.36 : 47,079.53 = 11,669.88 : x
  2. Step 2: Convert to fraction form
    31,386.36/47,079.53 = 11,669.88/x
  3. Step 3: Cross multiply
    31,386.36x = 47,079.53 × 11,669.88
  4. Step 4: Simplify right side
    31,386.36x = 549,412,259.33
  5. Step 5: Solve for x
    x = 549,412,259.33/31,386.36
  6. Step 6: Final answer
    x = 17,504.81

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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.