Home / 30,738.56-42,408-18,796.16

Finding the Fourth Proportional to 30,738.56, 42,408 and 18,796.16

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Solution

The fourth proportional to 30,738.56, 42,408 and 18,796.16 is: 25,931.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,738.56 : 42,408 = 18,796.16 : x
  2. Step 2: Convert to fraction form
    30,738.56/42,408 = 18,796.16/x
  3. Step 3: Cross multiply
    30,738.56x = 42,408 × 18,796.16
  4. Step 4: Simplify right side
    30,738.56x = 797,107,553.28
  5. Step 5: Solve for x
    x = 797,107,553.28/30,738.56
  6. Step 6: Final answer
    x = 25,931.84

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Double scale
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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.