Home / 15,140.16-20,893.28-8,425.49

Finding the Fourth Proportional to 15,140.16, 20,893.28 and 8,425.49

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Solution

The fourth proportional to 15,140.16, 20,893.28 and 8,425.49 is: 11,627.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,140.16 : 20,893.28 = 8,425.49 : x
  2. Step 2: Convert to fraction form
    15,140.16/20,893.28 = 8,425.49/x
  3. Step 3: Cross multiply
    15,140.16x = 20,893.28 × 8,425.49
  4. Step 4: Simplify right side
    15,140.16x = 176,035,975.11
  5. Step 5: Solve for x
    x = 176,035,975.11/15,140.16
  6. Step 6: Final answer
    x = 11,627.09

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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.