Home / 12,140.22-18,212.16-4,347.18

Finding the Fourth Proportional to 12,140.22, 18,212.16 and 4,347.18

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Solution

The fourth proportional to 12,140.22, 18,212.16 and 4,347.18 is: 6,521.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140.22 : 18,212.16 = 4,347.18 : x
  2. Step 2: Convert to fraction form
    12,140.22/18,212.16 = 4,347.18/x
  3. Step 3: Cross multiply
    12,140.22x = 18,212.16 × 4,347.18
  4. Step 4: Simplify right side
    12,140.22x = 79,171,537.71
  5. Step 5: Solve for x
    x = 79,171,537.71/12,140.22
  6. Step 6: Final answer
    x = 6,521.43

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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.