Home / 12,075.51-18,109.73-4,678.21

Finding the Fourth Proportional to 12,075.51, 18,109.73 and 4,678.21

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Solution

The fourth proportional to 12,075.51, 18,109.73 and 4,678.21 is: 7,015.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,075.51 : 18,109.73 = 4,678.21 : x
  2. Step 2: Convert to fraction form
    12,075.51/18,109.73 = 4,678.21/x
  3. Step 3: Cross multiply
    12,075.51x = 18,109.73 × 4,678.21
  4. Step 4: Simplify right side
    12,075.51x = 84,721,026.13
  5. Step 5: Solve for x
    x = 84,721,026.13/12,075.51
  6. Step 6: Final answer
    x = 7,015.94

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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.