Home / 28,203.51-42,503.41-25,395.78

Finding the Fourth Proportional to 28,203.51, 42,503.41 and 25,395.78

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Solution

The fourth proportional to 28,203.51, 42,503.41 and 25,395.78 is: 38,272.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,203.51 : 42,503.41 = 25,395.78 : x
  2. Step 2: Convert to fraction form
    28,203.51/42,503.41 = 25,395.78/x
  3. Step 3: Cross multiply
    28,203.51x = 42,503.41 × 25,395.78
  4. Step 4: Simplify right side
    28,203.51x = 1,079,407,186.12
  5. Step 5: Solve for x
    x = 1,079,407,186.12/28,203.51
  6. Step 6: Final answer
    x = 38,272.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.