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Finding the Fourth Proportional to 12,670.95, 17,485.55 and 6,928.19

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Solution

The fourth proportional to 12,670.95, 17,485.55 and 6,928.19 is: 9,560.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,670.95 : 17,485.55 = 6,928.19 : x
  2. Step 2: Convert to fraction form
    12,670.95/17,485.55 = 6,928.19/x
  3. Step 3: Cross multiply
    12,670.95x = 17,485.55 × 6,928.19
  4. Step 4: Simplify right side
    12,670.95x = 121,143,090.59
  5. Step 5: Solve for x
    x = 121,143,090.59/12,670.95
  6. Step 6: Final answer
    x = 9,560.70

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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.