Home / 10,656.45-15,989.27-5,720.31

Finding the Fourth Proportional to 10,656.45, 15,989.27 and 5,720.31

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Solution

The fourth proportional to 10,656.45, 15,989.27 and 5,720.31 is: 8,582.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,656.45 : 15,989.27 = 5,720.31 : x
  2. Step 2: Convert to fraction form
    10,656.45/15,989.27 = 5,720.31/x
  3. Step 3: Cross multiply
    10,656.45x = 15,989.27 × 5,720.31
  4. Step 4: Simplify right side
    10,656.45x = 91,463,581.07
  5. Step 5: Solve for x
    x = 91,463,581.07/10,656.45
  6. Step 6: Final answer
    x = 8,582.93

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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.