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Finding the Fourth Proportional to 18,075.51, 27,108.90 and 6,975.12

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Solution

The fourth proportional to 18,075.51, 27,108.90 and 6,975.12 is: 10,461.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,075.51 : 27,108.90 = 6,975.12 : x
  2. Step 2: Convert to fraction form
    18,075.51/27,108.90 = 6,975.12/x
  3. Step 3: Cross multiply
    18,075.51x = 27,108.90 × 6,975.12
  4. Step 4: Simplify right side
    18,075.51x = 189,087,830.57
  5. Step 5: Solve for x
    x = 189,087,830.57/18,075.51
  6. Step 6: Final answer
    x = 10,461.00

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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.