Home / 31,670.90-47,457.09-11,938.69

Finding the Fourth Proportional to 31,670.90, 47,457.09 and 11,938.69

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Solution

The fourth proportional to 31,670.90, 47,457.09 and 11,938.69 is: 17,889.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,670.90 : 47,457.09 = 11,938.69 : x
  2. Step 2: Convert to fraction form
    31,670.90/47,457.09 = 11,938.69/x
  3. Step 3: Cross multiply
    31,670.90x = 47,457.09 × 11,938.69
  4. Step 4: Simplify right side
    31,670.90x = 566,575,545.13
  5. Step 5: Solve for x
    x = 566,575,545.13/31,670.90
  6. Step 6: Final answer
    x = 17,889.47

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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.