Home / 12,012.01-18,017.62-5,438.20

Finding the Fourth Proportional to 12,012.01, 18,017.62 and 5,438.20

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Solution

The fourth proportional to 12,012.01, 18,017.62 and 5,438.20 is: 8,157.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,012.01 : 18,017.62 = 5,438.20 : x
  2. Step 2: Convert to fraction form
    12,012.01/18,017.62 = 5,438.20/x
  3. Step 3: Cross multiply
    12,012.01x = 18,017.62 × 5,438.20
  4. Step 4: Simplify right side
    12,012.01x = 97,983,421.08
  5. Step 5: Solve for x
    x = 97,983,421.08/12,012.01
  6. Step 6: Final answer
    x = 8,157.12

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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.