Home / 13,461.40-20,172.90-9,923.80

Finding the Fourth Proportional to 13,461.40, 20,172.90 and 9,923.80

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Solution

The fourth proportional to 13,461.40, 20,172.90 and 9,923.80 is: 14,871.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,461.40 : 20,172.90 = 9,923.80 : x
  2. Step 2: Convert to fraction form
    13,461.40/20,172.90 = 9,923.80/x
  3. Step 3: Cross multiply
    13,461.40x = 20,172.90 × 9,923.80
  4. Step 4: Simplify right side
    13,461.40x = 200,191,825.02
  5. Step 5: Solve for x
    x = 200,191,825.02/13,461.40
  6. Step 6: Final answer
    x = 14,871.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.