Home / 13,667.70-20,490.60-12,574.20

Finding the Fourth Proportional to 13,667.70, 20,490.60 and 12,574.20

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Solution

The fourth proportional to 13,667.70, 20,490.60 and 12,574.20 is: 18,851.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,667.70 : 20,490.60 = 12,574.20 : x
  2. Step 2: Convert to fraction form
    13,667.70/20,490.60 = 12,574.20/x
  3. Step 3: Cross multiply
    13,667.70x = 20,490.60 × 12,574.20
  4. Step 4: Simplify right side
    13,667.70x = 257,652,902.52
  5. Step 5: Solve for x
    x = 257,652,902.52/13,667.70
  6. Step 6: Final answer
    x = 18,851.23

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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.