Home / 42,004.36-63,018.84-12,422.98

Finding the Fourth Proportional to 42,004.36, 63,018.84 and 12,422.98

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Solution

The fourth proportional to 42,004.36, 63,018.84 and 12,422.98 is: 18,638.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,004.36 : 63,018.84 = 12,422.98 : x
  2. Step 2: Convert to fraction form
    42,004.36/63,018.84 = 12,422.98/x
  3. Step 3: Cross multiply
    42,004.36x = 63,018.84 × 12,422.98
  4. Step 4: Simplify right side
    42,004.36x = 782,881,473.85
  5. Step 5: Solve for x
    x = 782,881,473.85/42,004.36
  6. Step 6: Final answer
    x = 18,638.10

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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.