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Finding the Fourth Proportional to 34,866.60, 48,128.60 and 21,455.84

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Solution

The fourth proportional to 34,866.60, 48,128.60 and 21,455.84 is: 29,616.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,866.60 : 48,128.60 = 21,455.84 : x
  2. Step 2: Convert to fraction form
    34,866.60/48,128.60 = 21,455.84/x
  3. Step 3: Cross multiply
    34,866.60x = 48,128.60 × 21,455.84
  4. Step 4: Simplify right side
    34,866.60x = 1,032,639,541.02
  5. Step 5: Solve for x
    x = 1,032,639,541.02/34,866.60
  6. Step 6: Final answer
    x = 29,616.87

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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.