Home / 55,431.76-83,147.64-20,356.24

Finding the Fourth Proportional to 55,431.76, 83,147.64 and 20,356.24

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Solution

The fourth proportional to 55,431.76, 83,147.64 and 20,356.24 is: 30,534.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,431.76 : 83,147.64 = 20,356.24 : x
  2. Step 2: Convert to fraction form
    55,431.76/83,147.64 = 20,356.24/x
  3. Step 3: Cross multiply
    55,431.76x = 83,147.64 × 20,356.24
  4. Step 4: Simplify right side
    55,431.76x = 1,692,573,315.27
  5. Step 5: Solve for x
    x = 1,692,573,315.27/55,431.76
  6. Step 6: Final answer
    x = 30,534.36

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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.