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Finding the Fourth Proportional to 28,963.80, 43,252.95 and 28,650.68

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Solution

The fourth proportional to 28,963.80, 43,252.95 and 28,650.68 is: 42,785.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,963.80 : 43,252.95 = 28,650.68 : x
  2. Step 2: Convert to fraction form
    28,963.80/43,252.95 = 28,650.68/x
  3. Step 3: Cross multiply
    28,963.80x = 43,252.95 × 28,650.68
  4. Step 4: Simplify right side
    28,963.80x = 1,239,226,429.51
  5. Step 5: Solve for x
    x = 1,239,226,429.51/28,963.80
  6. Step 6: Final answer
    x = 42,785.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.