Home / 13,355.64-18,430.60-7,387.42

Finding the Fourth Proportional to 13,355.64, 18,430.60 and 7,387.42

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Solution

The fourth proportional to 13,355.64, 18,430.60 and 7,387.42 is: 10,194.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.64 : 18,430.60 = 7,387.42 : x
  2. Step 2: Convert to fraction form
    13,355.64/18,430.60 = 7,387.42/x
  3. Step 3: Cross multiply
    13,355.64x = 18,430.60 × 7,387.42
  4. Step 4: Simplify right side
    13,355.64x = 136,154,583.05
  5. Step 5: Solve for x
    x = 136,154,583.05/13,355.64
  6. Step 6: Final answer
    x = 10,194.54

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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.