Home / 42,126.40-63,199.32-12,546.28

Finding the Fourth Proportional to 42,126.40, 63,199.32 and 12,546.28

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Solution

The fourth proportional to 42,126.40, 63,199.32 and 12,546.28 is: 18,822.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,126.40 : 63,199.32 = 12,546.28 : x
  2. Step 2: Convert to fraction form
    42,126.40/63,199.32 = 12,546.28/x
  3. Step 3: Cross multiply
    42,126.40x = 63,199.32 × 12,546.28
  4. Step 4: Simplify right side
    42,126.40x = 792,916,364.53
  5. Step 5: Solve for x
    x = 792,916,364.53/42,126.40
  6. Step 6: Final answer
    x = 18,822.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.