Home / 13,641.90-20,475.84-7,072.80

Finding the Fourth Proportional to 13,641.90, 20,475.84 and 7,072.80

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Solution

The fourth proportional to 13,641.90, 20,475.84 and 7,072.80 is: 10,615.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,641.90 : 20,475.84 = 7,072.80 : x
  2. Step 2: Convert to fraction form
    13,641.90/20,475.84 = 7,072.80/x
  3. Step 3: Cross multiply
    13,641.90x = 20,475.84 × 7,072.80
  4. Step 4: Simplify right side
    13,641.90x = 144,821,521.15
  5. Step 5: Solve for x
    x = 144,821,521.15/13,641.90
  6. Step 6: Final answer
    x = 10,615.93

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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.