Home / 10,103.78-15,157.74-4,260.40

Finding the Fourth Proportional to 10,103.78, 15,157.74 and 4,260.40

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Solution

The fourth proportional to 10,103.78, 15,157.74 and 4,260.40 is: 6,391.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,103.78 : 15,157.74 = 4,260.40 : x
  2. Step 2: Convert to fraction form
    10,103.78/15,157.74 = 4,260.40/x
  3. Step 3: Cross multiply
    10,103.78x = 15,157.74 × 4,260.40
  4. Step 4: Simplify right side
    10,103.78x = 64,578,035.50
  5. Step 5: Solve for x
    x = 64,578,035.50/10,103.78
  6. Step 6: Final answer
    x = 6,391.47

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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.