Home / 31,578.84-43,581.47-18,154.71

Finding the Fourth Proportional to 31,578.84, 43,581.47 and 18,154.71

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Solution

The fourth proportional to 31,578.84, 43,581.47 and 18,154.71 is: 25,055.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,578.84 : 43,581.47 = 18,154.71 : x
  2. Step 2: Convert to fraction form
    31,578.84/43,581.47 = 18,154.71/x
  3. Step 3: Cross multiply
    31,578.84x = 43,581.47 × 18,154.71
  4. Step 4: Simplify right side
    31,578.84x = 791,208,858.45
  5. Step 5: Solve for x
    x = 791,208,858.45/31,578.84
  6. Step 6: Final answer
    x = 25,055.03

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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.