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Finding the Fourth Proportional to 28,066.90, 38,700.91 and 22,946.45

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Solution

The fourth proportional to 28,066.90, 38,700.91 and 22,946.45 is: 31,640.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,066.90 : 38,700.91 = 22,946.45 : x
  2. Step 2: Convert to fraction form
    28,066.90/38,700.91 = 22,946.45/x
  3. Step 3: Cross multiply
    28,066.90x = 38,700.91 × 22,946.45
  4. Step 4: Simplify right side
    28,066.90x = 888,048,496.27
  5. Step 5: Solve for x
    x = 888,048,496.27/28,066.90
  6. Step 6: Final answer
    x = 31,640.42

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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.