Home / 12,075.76-18,116.64-4,285.36

Finding the Fourth Proportional to 12,075.76, 18,116.64 and 4,285.36

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Solution

The fourth proportional to 12,075.76, 18,116.64 and 4,285.36 is: 6,429.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,075.76 : 18,116.64 = 4,285.36 : x
  2. Step 2: Convert to fraction form
    12,075.76/18,116.64 = 4,285.36/x
  3. Step 3: Cross multiply
    12,075.76x = 18,116.64 × 4,285.36
  4. Step 4: Simplify right side
    12,075.76x = 77,636,324.39
  5. Step 5: Solve for x
    x = 77,636,324.39/12,075.76
  6. Step 6: Final answer
    x = 6,429.10

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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.