Home / 20,477.47-28,258.87-11,525.03

Finding the Fourth Proportional to 20,477.47, 28,258.87 and 11,525.03

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Solution

The fourth proportional to 20,477.47, 28,258.87 and 11,525.03 is: 15,904.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,477.47 : 28,258.87 = 11,525.03 : x
  2. Step 2: Convert to fraction form
    20,477.47/28,258.87 = 11,525.03/x
  3. Step 3: Cross multiply
    20,477.47x = 28,258.87 × 11,525.03
  4. Step 4: Simplify right side
    20,477.47x = 325,684,324.52
  5. Step 5: Solve for x
    x = 325,684,324.52/20,477.47
  6. Step 6: Final answer
    x = 15,904.52

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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.