Home / 13,521.18-20,274.09-9,865.50

Finding the Fourth Proportional to 13,521.18, 20,274.09 and 9,865.50

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Solution

The fourth proportional to 13,521.18, 20,274.09 and 9,865.50 is: 14,792.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,521.18 : 20,274.09 = 9,865.50 : x
  2. Step 2: Convert to fraction form
    13,521.18/20,274.09 = 9,865.50/x
  3. Step 3: Cross multiply
    13,521.18x = 20,274.09 × 9,865.50
  4. Step 4: Simplify right side
    13,521.18x = 200,014,034.90
  5. Step 5: Solve for x
    x = 200,014,034.90/13,521.18
  6. Step 6: Final answer
    x = 14,792.65

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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.