Home / 18,599.40-25,653.78-13,580.64

Finding the Fourth Proportional to 18,599.40, 25,653.78 and 13,580.64

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Solution

The fourth proportional to 18,599.40, 25,653.78 and 13,580.64 is: 18,731.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,599.40 : 25,653.78 = 13,580.64 : x
  2. Step 2: Convert to fraction form
    18,599.40/25,653.78 = 13,580.64/x
  3. Step 3: Cross multiply
    18,599.40x = 25,653.78 × 13,580.64
  4. Step 4: Simplify right side
    18,599.40x = 348,394,750.82
  5. Step 5: Solve for x
    x = 348,394,750.82/18,599.40
  6. Step 6: Final answer
    x = 18,731.50

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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.