Home / 15,683.40-21,647.25-9,711.68

Finding the Fourth Proportional to 15,683.40, 21,647.25 and 9,711.68

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Solution

The fourth proportional to 15,683.40, 21,647.25 and 9,711.68 is: 13,404.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,683.40 : 21,647.25 = 9,711.68 : x
  2. Step 2: Convert to fraction form
    15,683.40/21,647.25 = 9,711.68/x
  3. Step 3: Cross multiply
    15,683.40x = 21,647.25 × 9,711.68
  4. Step 4: Simplify right side
    15,683.40x = 210,231,164.88
  5. Step 5: Solve for x
    x = 210,231,164.88/15,683.40
  6. Step 6: Final answer
    x = 13,404.69

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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.