Home / 30,210.36-41,689.74-16,781.08

Finding the Fourth Proportional to 30,210.36, 41,689.74 and 16,781.08

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Solution

The fourth proportional to 30,210.36, 41,689.74 and 16,781.08 is: 23,157.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,210.36 : 41,689.74 = 16,781.08 : x
  2. Step 2: Convert to fraction form
    30,210.36/41,689.74 = 16,781.08/x
  3. Step 3: Cross multiply
    30,210.36x = 41,689.74 × 16,781.08
  4. Step 4: Simplify right side
    30,210.36x = 699,598,862.12
  5. Step 5: Solve for x
    x = 699,598,862.12/30,210.36
  6. Step 6: Final answer
    x = 23,157.58

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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.