Home / 30,862.83-42,591.51-18,919.29

Finding the Fourth Proportional to 30,862.83, 42,591.51 and 18,919.29

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Solution

The fourth proportional to 30,862.83, 42,591.51 and 18,919.29 is: 26,109.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,862.83 : 42,591.51 = 18,919.29 : x
  2. Step 2: Convert to fraction form
    30,862.83/42,591.51 = 18,919.29/x
  3. Step 3: Cross multiply
    30,862.83x = 42,591.51 × 18,919.29
  4. Step 4: Simplify right side
    30,862.83x = 805,801,129.23
  5. Step 5: Solve for x
    x = 805,801,129.23/30,862.83
  6. Step 6: Final answer
    x = 26,109.11

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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.