Home / 30,580.20-42,161.60-19,806.03

Finding the Fourth Proportional to 30,580.20, 42,161.60 and 19,806.03

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Solution

The fourth proportional to 30,580.20, 42,161.60 and 19,806.03 is: 27,307.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,580.20 : 42,161.60 = 19,806.03 : x
  2. Step 2: Convert to fraction form
    30,580.20/42,161.60 = 19,806.03/x
  3. Step 3: Cross multiply
    30,580.20x = 42,161.60 × 19,806.03
  4. Step 4: Simplify right side
    30,580.20x = 835,053,963.96
  5. Step 5: Solve for x
    x = 835,053,963.96/30,580.20
  6. Step 6: Final answer
    x = 27,307.01

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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.