Home / 15,629.58-21,568-8,554.64

Finding the Fourth Proportional to 15,629.58, 21,568 and 8,554.64

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Solution

The fourth proportional to 15,629.58, 21,568 and 8,554.64 is: 11,804.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,629.58 : 21,568 = 8,554.64 : x
  2. Step 2: Convert to fraction form
    15,629.58/21,568 = 8,554.64/x
  3. Step 3: Cross multiply
    15,629.58x = 21,568 × 8,554.64
  4. Step 4: Simplify right side
    15,629.58x = 184,506,475.52
  5. Step 5: Solve for x
    x = 184,506,475.52/15,629.58
  6. Step 6: Final answer
    x = 11,804.95

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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.