Home / 30,559.57-42,172.14-18,622.97

Finding the Fourth Proportional to 30,559.57, 42,172.14 and 18,622.97

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Solution

The fourth proportional to 30,559.57, 42,172.14 and 18,622.97 is: 25,699.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,559.57 : 42,172.14 = 18,622.97 : x
  2. Step 2: Convert to fraction form
    30,559.57/42,172.14 = 18,622.97/x
  3. Step 3: Cross multiply
    30,559.57x = 42,172.14 × 18,622.97
  4. Step 4: Simplify right side
    30,559.57x = 785,370,498.06
  5. Step 5: Solve for x
    x = 785,370,498.06/30,559.57
  6. Step 6: Final answer
    x = 25,699.66

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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.