Home / 13,528.40-18,667.56-7,559.60

Finding the Fourth Proportional to 13,528.40, 18,667.56 and 7,559.60

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Solution

The fourth proportional to 13,528.40, 18,667.56 and 7,559.60 is: 10,431.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,528.40 : 18,667.56 = 7,559.60 : x
  2. Step 2: Convert to fraction form
    13,528.40/18,667.56 = 7,559.60/x
  3. Step 3: Cross multiply
    13,528.40x = 18,667.56 × 7,559.60
  4. Step 4: Simplify right side
    13,528.40x = 141,119,286.58
  5. Step 5: Solve for x
    x = 141,119,286.58/13,528.40
  6. Step 6: Final answer
    x = 10,431.34

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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.