Home / 12,281.22-18,421.53-6,661.34

Finding the Fourth Proportional to 12,281.22, 18,421.53 and 6,661.34

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Solution

The fourth proportional to 12,281.22, 18,421.53 and 6,661.34 is: 9,991.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.22 : 18,421.53 = 6,661.34 : x
  2. Step 2: Convert to fraction form
    12,281.22/18,421.53 = 6,661.34/x
  3. Step 3: Cross multiply
    12,281.22x = 18,421.53 × 6,661.34
  4. Step 4: Simplify right side
    12,281.22x = 122,712,026.64
  5. Step 5: Solve for x
    x = 122,712,026.64/12,281.22
  6. Step 6: Final answer
    x = 9,991.84

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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.