Home / 10,399.86-15,599.87-4,160.40

Finding the Fourth Proportional to 10,399.86, 15,599.87 and 4,160.40

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Solution

The fourth proportional to 10,399.86, 15,599.87 and 4,160.40 is: 6,240.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,399.86 : 15,599.87 = 4,160.40 : x
  2. Step 2: Convert to fraction form
    10,399.86/15,599.87 = 4,160.40/x
  3. Step 3: Cross multiply
    10,399.86x = 15,599.87 × 4,160.40
  4. Step 4: Simplify right side
    10,399.86x = 64,901,678.35
  5. Step 5: Solve for x
    x = 64,901,678.35/10,399.86
  6. Step 6: Final answer
    x = 6,240.63

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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.