Home / 12,028.96-18,038.95-4,129.23

Finding the Fourth Proportional to 12,028.96, 18,038.95 and 4,129.23

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Solution

The fourth proportional to 12,028.96, 18,038.95 and 4,129.23 is: 6,192.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,028.96 : 18,038.95 = 4,129.23 : x
  2. Step 2: Convert to fraction form
    12,028.96/18,038.95 = 4,129.23/x
  3. Step 3: Cross multiply
    12,028.96x = 18,038.95 × 4,129.23
  4. Step 4: Simplify right side
    12,028.96x = 74,487,030.83
  5. Step 5: Solve for x
    x = 74,487,030.83/12,028.96
  6. Step 6: Final answer
    x = 6,192.31

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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.