Home / 27,784.77-38,343-15,847.80

Finding the Fourth Proportional to 27,784.77, 38,343 and 15,847.80

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Solution

The fourth proportional to 27,784.77, 38,343 and 15,847.80 is: 21,869.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,784.77 : 38,343 = 15,847.80 : x
  2. Step 2: Convert to fraction form
    27,784.77/38,343 = 15,847.80/x
  3. Step 3: Cross multiply
    27,784.77x = 38,343 × 15,847.80
  4. Step 4: Simplify right side
    27,784.77x = 607,652,195.40
  5. Step 5: Solve for x
    x = 607,652,195.40/27,784.77
  6. Step 6: Final answer
    x = 21,869.97

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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.