Home / 12,368.49-18,555.80-3,603.48

Finding the Fourth Proportional to 12,368.49, 18,555.80 and 3,603.48

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Solution

The fourth proportional to 12,368.49, 18,555.80 and 3,603.48 is: 5,406.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,368.49 : 18,555.80 = 3,603.48 : x
  2. Step 2: Convert to fraction form
    12,368.49/18,555.80 = 3,603.48/x
  3. Step 3: Cross multiply
    12,368.49x = 18,555.80 × 3,603.48
  4. Step 4: Simplify right side
    12,368.49x = 66,865,436.17
  5. Step 5: Solve for x
    x = 66,865,436.17/12,368.49
  6. Step 6: Final answer
    x = 5,406.11

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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.