Home / 42,393.54-63,586.85-12,405.42

Finding the Fourth Proportional to 42,393.54, 63,586.85 and 12,405.42

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Solution

The fourth proportional to 42,393.54, 63,586.85 and 12,405.42 is: 18,607.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,393.54 : 63,586.85 = 12,405.42 : x
  2. Step 2: Convert to fraction form
    42,393.54/63,586.85 = 12,405.42/x
  3. Step 3: Cross multiply
    42,393.54x = 63,586.85 × 12,405.42
  4. Step 4: Simplify right side
    42,393.54x = 788,821,363.84
  5. Step 5: Solve for x
    x = 788,821,363.84/42,393.54
  6. Step 6: Final answer
    x = 18,607.11

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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.