Home / 42,440.72-63,670.93-12,453.75

Finding the Fourth Proportional to 42,440.72, 63,670.93 and 12,453.75

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Solution

The fourth proportional to 42,440.72, 63,670.93 and 12,453.75 is: 18,683.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,440.72 : 63,670.93 = 12,453.75 : x
  2. Step 2: Convert to fraction form
    42,440.72/63,670.93 = 12,453.75/x
  3. Step 3: Cross multiply
    42,440.72x = 63,670.93 × 12,453.75
  4. Step 4: Simplify right side
    42,440.72x = 792,941,844.49
  5. Step 5: Solve for x
    x = 792,941,844.49/42,440.72
  6. Step 6: Final answer
    x = 18,683.52

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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.