Home / 15,683.40-21,642.44-8,609.99

Finding the Fourth Proportional to 15,683.40, 21,642.44 and 8,609.99

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Solution

The fourth proportional to 15,683.40, 21,642.44 and 8,609.99 is: 11,881.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,683.40 : 21,642.44 = 8,609.99 : x
  2. Step 2: Convert to fraction form
    15,683.40/21,642.44 = 8,609.99/x
  3. Step 3: Cross multiply
    15,683.40x = 21,642.44 × 8,609.99
  4. Step 4: Simplify right side
    15,683.40x = 186,341,040.71
  5. Step 5: Solve for x
    x = 186,341,040.71/15,683.40
  6. Step 6: Final answer
    x = 11,881.42

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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.