Home / 10,495.15-15,740.89-3,921.39

Finding the Fourth Proportional to 10,495.15, 15,740.89 and 3,921.39

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Solution

The fourth proportional to 10,495.15, 15,740.89 and 3,921.39 is: 5,881.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,495.15 : 15,740.89 = 3,921.39 : x
  2. Step 2: Convert to fraction form
    10,495.15/15,740.89 = 3,921.39/x
  3. Step 3: Cross multiply
    10,495.15x = 15,740.89 × 3,921.39
  4. Step 4: Simplify right side
    10,495.15x = 61,726,168.64
  5. Step 5: Solve for x
    x = 61,726,168.64/10,495.15
  6. Step 6: Final answer
    x = 5,881.40

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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.