Home / 42,210.58-63,317.98-12,628.66

Finding the Fourth Proportional to 42,210.58, 63,317.98 and 12,628.66

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Solution

The fourth proportional to 42,210.58, 63,317.98 and 12,628.66 is: 18,943.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,210.58 : 63,317.98 = 12,628.66 : x
  2. Step 2: Convert to fraction form
    42,210.58/63,317.98 = 12,628.66/x
  3. Step 3: Cross multiply
    42,210.58x = 63,317.98 × 12,628.66
  4. Step 4: Simplify right side
    42,210.58x = 799,621,241.31
  5. Step 5: Solve for x
    x = 799,621,241.31/42,210.58
  6. Step 6: Final answer
    x = 18,943.62

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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.