Home / 21,747.61-30,020.89-14,683.60

Finding the Fourth Proportional to 21,747.61, 30,020.89 and 14,683.60

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Solution

The fourth proportional to 21,747.61, 30,020.89 and 14,683.60 is: 20,269.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,747.61 : 30,020.89 = 14,683.60 : x
  2. Step 2: Convert to fraction form
    21,747.61/30,020.89 = 14,683.60/x
  3. Step 3: Cross multiply
    21,747.61x = 30,020.89 × 14,683.60
  4. Step 4: Simplify right side
    21,747.61x = 440,814,628.64
  5. Step 5: Solve for x
    x = 440,814,628.64/21,747.61
  6. Step 6: Final answer
    x = 20,269.57

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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.