Home / 31,835.60-43,935.73-20,528.63

Finding the Fourth Proportional to 31,835.60, 43,935.73 and 20,528.63

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Solution

The fourth proportional to 31,835.60, 43,935.73 and 20,528.63 is: 28,331.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,835.60 : 43,935.73 = 20,528.63 : x
  2. Step 2: Convert to fraction form
    31,835.60/43,935.73 = 20,528.63/x
  3. Step 3: Cross multiply
    31,835.60x = 43,935.73 × 20,528.63
  4. Step 4: Simplify right side
    31,835.60x = 901,940,073.95
  5. Step 5: Solve for x
    x = 901,940,073.95/31,835.60
  6. Step 6: Final answer
    x = 28,331.18

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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.