Home / 30,890-42,627.96-16,742.48

Finding the Fourth Proportional to 30,890, 42,627.96 and 16,742.48

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Solution

The fourth proportional to 30,890, 42,627.96 and 16,742.48 is: 23,104.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,890 : 42,627.96 = 16,742.48 : x
  2. Step 2: Convert to fraction form
    30,890/42,627.96 = 16,742.48/x
  3. Step 3: Cross multiply
    30,890x = 42,627.96 × 16,742.48
  4. Step 4: Simplify right side
    30,890x = 713,697,767.74
  5. Step 5: Solve for x
    x = 713,697,767.74/30,890
  6. Step 6: Final answer
    x = 23,104.49

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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.