Home / 13,568.57-20,339.38-6,440.32

Finding the Fourth Proportional to 13,568.57, 20,339.38 and 6,440.32

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Solution

The fourth proportional to 13,568.57, 20,339.38 and 6,440.32 is: 9,654.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,568.57 : 20,339.38 = 6,440.32 : x
  2. Step 2: Convert to fraction form
    13,568.57/20,339.38 = 6,440.32/x
  3. Step 3: Cross multiply
    13,568.57x = 20,339.38 × 6,440.32
  4. Step 4: Simplify right side
    13,568.57x = 130,992,071.81
  5. Step 5: Solve for x
    x = 130,992,071.81/13,568.57
  6. Step 6: Final answer
    x = 9,654.08

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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.