Home / 38,130.39-52,621.89-21,991.71

Finding the Fourth Proportional to 38,130.39, 52,621.89 and 21,991.71

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Solution

The fourth proportional to 38,130.39, 52,621.89 and 21,991.71 is: 30,349.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,130.39 : 52,621.89 = 21,991.71 : x
  2. Step 2: Convert to fraction form
    38,130.39/52,621.89 = 21,991.71/x
  3. Step 3: Cross multiply
    38,130.39x = 52,621.89 × 21,991.71
  4. Step 4: Simplify right side
    38,130.39x = 1,157,245,344.53
  5. Step 5: Solve for x
    x = 1,157,245,344.53/38,130.39
  6. Step 6: Final answer
    x = 30,349.69

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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.