Home / 30,853.71-42,578.89-18,923.63

Finding the Fourth Proportional to 30,853.71, 42,578.89 and 18,923.63

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Solution

The fourth proportional to 30,853.71, 42,578.89 and 18,923.63 is: 26,115.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,853.71 : 42,578.89 = 18,923.63 : x
  2. Step 2: Convert to fraction form
    30,853.71/42,578.89 = 18,923.63/x
  3. Step 3: Cross multiply
    30,853.71x = 42,578.89 × 18,923.63
  4. Step 4: Simplify right side
    30,853.71x = 805,746,899.97
  5. Step 5: Solve for x
    x = 805,746,899.97/30,853.71
  6. Step 6: Final answer
    x = 26,115.07

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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.