Home / 42,539.84-63,818.87-12,960.05

Finding the Fourth Proportional to 42,539.84, 63,818.87 and 12,960.05

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Solution

The fourth proportional to 42,539.84, 63,818.87 and 12,960.05 is: 19,442.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,539.84 : 63,818.87 = 12,960.05 : x
  2. Step 2: Convert to fraction form
    42,539.84/63,818.87 = 12,960.05/x
  3. Step 3: Cross multiply
    42,539.84x = 63,818.87 × 12,960.05
  4. Step 4: Simplify right side
    42,539.84x = 827,095,362.25
  5. Step 5: Solve for x
    x = 827,095,362.25/42,539.84
  6. Step 6: Final answer
    x = 19,442.84

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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.