Home / 12,989.44-17,925.60-7,684.12

Finding the Fourth Proportional to 12,989.44, 17,925.60 and 7,684.12

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Solution

The fourth proportional to 12,989.44, 17,925.60 and 7,684.12 is: 10,604.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989.44 : 17,925.60 = 7,684.12 : x
  2. Step 2: Convert to fraction form
    12,989.44/17,925.60 = 7,684.12/x
  3. Step 3: Cross multiply
    12,989.44x = 17,925.60 × 7,684.12
  4. Step 4: Simplify right side
    12,989.44x = 137,742,461.47
  5. Step 5: Solve for x
    x = 137,742,461.47/12,989.44
  6. Step 6: Final answer
    x = 10,604.19

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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.