Home / 15,489.03-21,376.58-8,683.70

Finding the Fourth Proportional to 15,489.03, 21,376.58 and 8,683.70

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Solution

The fourth proportional to 15,489.03, 21,376.58 and 8,683.70 is: 11,984.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,489.03 : 21,376.58 = 8,683.70 : x
  2. Step 2: Convert to fraction form
    15,489.03/21,376.58 = 8,683.70/x
  3. Step 3: Cross multiply
    15,489.03x = 21,376.58 × 8,683.70
  4. Step 4: Simplify right side
    15,489.03x = 185,627,817.77
  5. Step 5: Solve for x
    x = 185,627,817.77/15,489.03
  6. Step 6: Final answer
    x = 11,984.47

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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.