Home / 31,727.54-43,764.14-20,411.76

Finding the Fourth Proportional to 31,727.54, 43,764.14 and 20,411.76

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Solution

The fourth proportional to 31,727.54, 43,764.14 and 20,411.76 is: 28,155.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,727.54 : 43,764.14 = 20,411.76 : x
  2. Step 2: Convert to fraction form
    31,727.54/43,764.14 = 20,411.76/x
  3. Step 3: Cross multiply
    31,727.54x = 43,764.14 × 20,411.76
  4. Step 4: Simplify right side
    31,727.54x = 893,303,020.23
  5. Step 5: Solve for x
    x = 893,303,020.23/31,727.54
  6. Step 6: Final answer
    x = 28,155.45

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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.