Home / 12,315.51-18,475.29-6,075.81

Finding the Fourth Proportional to 12,315.51, 18,475.29 and 6,075.81

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Solution

The fourth proportional to 12,315.51, 18,475.29 and 6,075.81 is: 9,114.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,315.51 : 18,475.29 = 6,075.81 : x
  2. Step 2: Convert to fraction form
    12,315.51/18,475.29 = 6,075.81/x
  3. Step 3: Cross multiply
    12,315.51x = 18,475.29 × 6,075.81
  4. Step 4: Simplify right side
    12,315.51x = 112,252,351.73
  5. Step 5: Solve for x
    x = 112,252,351.73/12,315.51
  6. Step 6: Final answer
    x = 9,114.71

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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.