Home / 11,400.57-15,731.69-6,364.40

Finding the Fourth Proportional to 11,400.57, 15,731.69 and 6,364.40

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Solution

The fourth proportional to 11,400.57, 15,731.69 and 6,364.40 is: 8,782.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,400.57 : 15,731.69 = 6,364.40 : x
  2. Step 2: Convert to fraction form
    11,400.57/15,731.69 = 6,364.40/x
  3. Step 3: Cross multiply
    11,400.57x = 15,731.69 × 6,364.40
  4. Step 4: Simplify right side
    11,400.57x = 100,122,657.36
  5. Step 5: Solve for x
    x = 100,122,657.36/11,400.57
  6. Step 6: Final answer
    x = 8,782.25

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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.