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Finding the Fourth Proportional to 28,613.94, 39,470.94 and 22,955.01

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Solution

The fourth proportional to 28,613.94, 39,470.94 and 22,955.01 is: 31,664.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,613.94 : 39,470.94 = 22,955.01 : x
  2. Step 2: Convert to fraction form
    28,613.94/39,470.94 = 22,955.01/x
  3. Step 3: Cross multiply
    28,613.94x = 39,470.94 × 22,955.01
  4. Step 4: Simplify right side
    28,613.94x = 906,055,822.41
  5. Step 5: Solve for x
    x = 906,055,822.41/28,613.94
  6. Step 6: Final answer
    x = 31,664.84

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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.