Home / 15,559.08-21,471.12-8,485.64

Finding the Fourth Proportional to 15,559.08, 21,471.12 and 8,485.64

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Solution

The fourth proportional to 15,559.08, 21,471.12 and 8,485.64 is: 11,709.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,559.08 : 21,471.12 = 8,485.64 : x
  2. Step 2: Convert to fraction form
    15,559.08/21,471.12 = 8,485.64/x
  3. Step 3: Cross multiply
    15,559.08x = 21,471.12 × 8,485.64
  4. Step 4: Simplify right side
    15,559.08x = 182,196,194.72
  5. Step 5: Solve for x
    x = 182,196,194.72/15,559.08
  6. Step 6: Final answer
    x = 11,709.96

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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.