Home / 31,073.30-42,866.46-21,005.24

Finding the Fourth Proportional to 31,073.30, 42,866.46 and 21,005.24

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Solution

The fourth proportional to 31,073.30, 42,866.46 and 21,005.24 is: 28,977.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,073.30 : 42,866.46 = 21,005.24 : x
  2. Step 2: Convert to fraction form
    31,073.30/42,866.46 = 21,005.24/x
  3. Step 3: Cross multiply
    31,073.30x = 42,866.46 × 21,005.24
  4. Step 4: Simplify right side
    31,073.30x = 900,420,280.25
  5. Step 5: Solve for x
    x = 900,420,280.25/31,073.30
  6. Step 6: Final answer
    x = 28,977.30

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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.