Home / 10,316.43-15,477.89-7,578.63

Finding the Fourth Proportional to 10,316.43, 15,477.89 and 7,578.63

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Solution

The fourth proportional to 10,316.43, 15,477.89 and 7,578.63 is: 11,370.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,316.43 : 15,477.89 = 7,578.63 : x
  2. Step 2: Convert to fraction form
    10,316.43/15,477.89 = 7,578.63/x
  3. Step 3: Cross multiply
    10,316.43x = 15,477.89 × 7,578.63
  4. Step 4: Simplify right side
    10,316.43x = 117,301,163.60
  5. Step 5: Solve for x
    x = 117,301,163.60/10,316.43
  6. Step 6: Final answer
    x = 11,370.33

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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.