Home / 21,188.69-29,240.31-11,628.74

Finding the Fourth Proportional to 21,188.69, 29,240.31 and 11,628.74

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Solution

The fourth proportional to 21,188.69, 29,240.31 and 11,628.74 is: 16,047.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,188.69 : 29,240.31 = 11,628.74 : x
  2. Step 2: Convert to fraction form
    21,188.69/29,240.31 = 11,628.74/x
  3. Step 3: Cross multiply
    21,188.69x = 29,240.31 × 11,628.74
  4. Step 4: Simplify right side
    21,188.69x = 340,027,962.51
  5. Step 5: Solve for x
    x = 340,027,962.51/21,188.69
  6. Step 6: Final answer
    x = 16,047.62

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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.