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Finding the Fourth Proportional to 28,944, 39,942.72 and 16,368.48

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Solution

The fourth proportional to 28,944, 39,942.72 and 16,368.48 is: 22,588.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,944 : 39,942.72 = 16,368.48 : x
  2. Step 2: Convert to fraction form
    28,944/39,942.72 = 16,368.48/x
  3. Step 3: Cross multiply
    28,944x = 39,942.72 × 16,368.48
  4. Step 4: Simplify right side
    28,944x = 653,801,613.47
  5. Step 5: Solve for x
    x = 653,801,613.47/28,944
  6. Step 6: Final answer
    x = 22,588.50

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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.