Home / 38,891.40-53,706.96-30,991.74

Finding the Fourth Proportional to 38,891.40, 53,706.96 and 30,991.74

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Solution

The fourth proportional to 38,891.40, 53,706.96 and 30,991.74 is: 42,797.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,891.40 : 53,706.96 = 30,991.74 : x
  2. Step 2: Convert to fraction form
    38,891.40/53,706.96 = 30,991.74/x
  3. Step 3: Cross multiply
    38,891.40x = 53,706.96 × 30,991.74
  4. Step 4: Simplify right side
    38,891.40x = 1,664,472,140.51
  5. Step 5: Solve for x
    x = 1,664,472,140.51/38,891.40
  6. Step 6: Final answer
    x = 42,797.95

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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.