Home / 30,984.21-42,749.07-17,555.18

Finding the Fourth Proportional to 30,984.21, 42,749.07 and 17,555.18

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Solution

The fourth proportional to 30,984.21, 42,749.07 and 17,555.18 is: 24,220.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,984.21 : 42,749.07 = 17,555.18 : x
  2. Step 2: Convert to fraction form
    30,984.21/42,749.07 = 17,555.18/x
  3. Step 3: Cross multiply
    30,984.21x = 42,749.07 × 17,555.18
  4. Step 4: Simplify right side
    30,984.21x = 750,467,618.68
  5. Step 5: Solve for x
    x = 750,467,618.68/30,984.21
  6. Step 6: Final answer
    x = 24,220.97

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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.