Home / 9,268.40-13,870.20-8,490.80

Finding the Fourth Proportional to 9,268.40, 13,870.20 and 8,490.80

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Solution

The fourth proportional to 9,268.40, 13,870.20 and 8,490.80 is: 12,706.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,268.40 : 13,870.20 = 8,490.80 : x
  2. Step 2: Convert to fraction form
    9,268.40/13,870.20 = 8,490.80/x
  3. Step 3: Cross multiply
    9,268.40x = 13,870.20 × 8,490.80
  4. Step 4: Simplify right side
    9,268.40x = 117,769,094.16
  5. Step 5: Solve for x
    x = 117,769,094.16/9,268.40
  6. Step 6: Final answer
    x = 12,706.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.