Home / 21,347.60-29,461.31-11,789.31

Finding the Fourth Proportional to 21,347.60, 29,461.31 and 11,789.31

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Solution

The fourth proportional to 21,347.60, 29,461.31 and 11,789.31 is: 16,270.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,347.60 : 29,461.31 = 11,789.31 : x
  2. Step 2: Convert to fraction form
    21,347.60/29,461.31 = 11,789.31/x
  3. Step 3: Cross multiply
    21,347.60x = 29,461.31 × 11,789.31
  4. Step 4: Simplify right side
    21,347.60x = 347,328,457.65
  5. Step 5: Solve for x
    x = 347,328,457.65/21,347.60
  6. Step 6: Final answer
    x = 16,270.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.