Home / 12,615.67-18,909.73-5,216.19

Finding the Fourth Proportional to 12,615.67, 18,909.73 and 5,216.19

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Solution

The fourth proportional to 12,615.67, 18,909.73 and 5,216.19 is: 7,818.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615.67 : 18,909.73 = 5,216.19 : x
  2. Step 2: Convert to fraction form
    12,615.67/18,909.73 = 5,216.19/x
  3. Step 3: Cross multiply
    12,615.67x = 18,909.73 × 5,216.19
  4. Step 4: Simplify right side
    12,615.67x = 98,636,744.53
  5. Step 5: Solve for x
    x = 98,636,744.53/12,615.67
  6. Step 6: Final answer
    x = 7,818.59

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1.5x scale

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.