Home / 30,874.07-42,600.60-18,127.80

Finding the Fourth Proportional to 30,874.07, 42,600.60 and 18,127.80

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Solution

The fourth proportional to 30,874.07, 42,600.60 and 18,127.80 is: 25,013.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,874.07 : 42,600.60 = 18,127.80 : x
  2. Step 2: Convert to fraction form
    30,874.07/42,600.60 = 18,127.80/x
  3. Step 3: Cross multiply
    30,874.07x = 42,600.60 × 18,127.80
  4. Step 4: Simplify right side
    30,874.07x = 772,255,156.68
  5. Step 5: Solve for x
    x = 772,255,156.68/30,874.07
  6. Step 6: Final answer
    x = 25,013.07

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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.