Home / 12,020.70-18,030.65-5,442.29

Finding the Fourth Proportional to 12,020.70, 18,030.65 and 5,442.29

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Solution

The fourth proportional to 12,020.70, 18,030.65 and 5,442.29 is: 8,163.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,020.70 : 18,030.65 = 5,442.29 : x
  2. Step 2: Convert to fraction form
    12,020.70/18,030.65 = 5,442.29/x
  3. Step 3: Cross multiply
    12,020.70x = 18,030.65 × 5,442.29
  4. Step 4: Simplify right side
    12,020.70x = 98,127,908.82
  5. Step 5: Solve for x
    x = 98,127,908.82/12,020.70
  6. Step 6: Final answer
    x = 8,163.24

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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.