Home / 42,503.06-63,756.87-12,918.66

Finding the Fourth Proportional to 42,503.06, 63,756.87 and 12,918.66

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Solution

The fourth proportional to 42,503.06, 63,756.87 and 12,918.66 is: 19,378.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,503.06 : 63,756.87 = 12,918.66 : x
  2. Step 2: Convert to fraction form
    42,503.06/63,756.87 = 12,918.66/x
  3. Step 3: Cross multiply
    42,503.06x = 63,756.87 × 12,918.66
  4. Step 4: Simplify right side
    42,503.06x = 823,653,261.60
  5. Step 5: Solve for x
    x = 823,653,261.60/42,503.06
  6. Step 6: Final answer
    x = 19,378.68

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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.