Home / 12,907.32-17,812.10-7,318.28

Finding the Fourth Proportional to 12,907.32, 17,812.10 and 7,318.28

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Solution

The fourth proportional to 12,907.32, 17,812.10 and 7,318.28 is: 10,099.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,907.32 : 17,812.10 = 7,318.28 : x
  2. Step 2: Convert to fraction form
    12,907.32/17,812.10 = 7,318.28/x
  3. Step 3: Cross multiply
    12,907.32x = 17,812.10 × 7,318.28
  4. Step 4: Simplify right side
    12,907.32x = 130,353,935.19
  5. Step 5: Solve for x
    x = 130,353,935.19/12,907.32
  6. Step 6: Final answer
    x = 10,099.23

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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.