Home / 12,395.40-17,106.84-7,089.18

Finding the Fourth Proportional to 12,395.40, 17,106.84 and 7,089.18

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Solution

The fourth proportional to 12,395.40, 17,106.84 and 7,089.18 is: 9,783.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,395.40 : 17,106.84 = 7,089.18 : x
  2. Step 2: Convert to fraction form
    12,395.40/17,106.84 = 7,089.18/x
  3. Step 3: Cross multiply
    12,395.40x = 17,106.84 × 7,089.18
  4. Step 4: Simplify right side
    12,395.40x = 121,273,467.99
  5. Step 5: Solve for x
    x = 121,273,467.99/12,395.40
  6. Step 6: Final answer
    x = 9,783.75

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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.