Home / 30,687.12-46,042.02-20,918.52

Finding the Fourth Proportional to 30,687.12, 46,042.02 and 20,918.52

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Solution

The fourth proportional to 30,687.12, 46,042.02 and 20,918.52 is: 31,385.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,687.12 : 46,042.02 = 20,918.52 : x
  2. Step 2: Convert to fraction form
    30,687.12/46,042.02 = 20,918.52/x
  3. Step 3: Cross multiply
    30,687.12x = 46,042.02 × 20,918.52
  4. Step 4: Simplify right side
    30,687.12x = 963,130,916.21
  5. Step 5: Solve for x
    x = 963,130,916.21/30,687.12
  6. Step 6: Final answer
    x = 31,385.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.