Home / 12,291.85-18,438.84-5,272.19

Finding the Fourth Proportional to 12,291.85, 18,438.84 and 5,272.19

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Solution

The fourth proportional to 12,291.85, 18,438.84 and 5,272.19 is: 7,908.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,291.85 : 18,438.84 = 5,272.19 : x
  2. Step 2: Convert to fraction form
    12,291.85/18,438.84 = 5,272.19/x
  3. Step 3: Cross multiply
    12,291.85x = 18,438.84 × 5,272.19
  4. Step 4: Simplify right side
    12,291.85x = 97,213,044.81
  5. Step 5: Solve for x
    x = 97,213,044.81/12,291.85
  6. Step 6: Final answer
    x = 7,908.74

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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.