Home / 12,395.40-18,560.70-9,090.60

Finding the Fourth Proportional to 12,395.40, 18,560.70 and 9,090.60

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Solution

The fourth proportional to 12,395.40, 18,560.70 and 9,090.60 is: 13,612.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,395.40 : 18,560.70 = 9,090.60 : x
  2. Step 2: Convert to fraction form
    12,395.40/18,560.70 = 9,090.60/x
  3. Step 3: Cross multiply
    12,395.40x = 18,560.70 × 9,090.60
  4. Step 4: Simplify right side
    12,395.40x = 168,727,899.42
  5. Step 5: Solve for x
    x = 168,727,899.42/12,395.40
  6. Step 6: Final answer
    x = 13,612.14

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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.