Home / 31,352.77-43,280.21-20,037.47

Finding the Fourth Proportional to 31,352.77, 43,280.21 and 20,037.47

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Solution

The fourth proportional to 31,352.77, 43,280.21 and 20,037.47 is: 27,660.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,352.77 : 43,280.21 = 20,037.47 : x
  2. Step 2: Convert to fraction form
    31,352.77/43,280.21 = 20,037.47/x
  3. Step 3: Cross multiply
    31,352.77x = 43,280.21 × 20,037.47
  4. Step 4: Simplify right side
    31,352.77x = 867,225,809.28
  5. Step 5: Solve for x
    x = 867,225,809.28/31,352.77
  6. Step 6: Final answer
    x = 27,660.27

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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.