Home / 15,683.19-21,642.31-8,512.76

Finding the Fourth Proportional to 15,683.19, 21,642.31 and 8,512.76

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Solution

The fourth proportional to 15,683.19, 21,642.31 and 8,512.76 is: 11,747.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,683.19 : 21,642.31 = 8,512.76 : x
  2. Step 2: Convert to fraction form
    15,683.19/21,642.31 = 8,512.76/x
  3. Step 3: Cross multiply
    15,683.19x = 21,642.31 × 8,512.76
  4. Step 4: Simplify right side
    15,683.19x = 184,235,855.62
  5. Step 5: Solve for x
    x = 184,235,855.62/15,683.19
  6. Step 6: Final answer
    x = 11,747.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.