Home / 15,629.55-21,568.80-8,556.40

Finding the Fourth Proportional to 15,629.55, 21,568.80 and 8,556.40

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Solution

The fourth proportional to 15,629.55, 21,568.80 and 8,556.40 is: 11,807.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,629.55 : 21,568.80 = 8,556.40 : x
  2. Step 2: Convert to fraction form
    15,629.55/21,568.80 = 8,556.40/x
  3. Step 3: Cross multiply
    15,629.55x = 21,568.80 × 8,556.40
  4. Step 4: Simplify right side
    15,629.55x = 184,551,280.32
  5. Step 5: Solve for x
    x = 184,551,280.32/15,629.55
  6. Step 6: Final answer
    x = 11,807.84

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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.