Home / 12,281.88-18,423.40-3,518.08

Finding the Fourth Proportional to 12,281.88, 18,423.40 and 3,518.08

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Solution

The fourth proportional to 12,281.88, 18,423.40 and 3,518.08 is: 5,277.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.88 : 18,423.40 = 3,518.08 : x
  2. Step 2: Convert to fraction form
    12,281.88/18,423.40 = 3,518.08/x
  3. Step 3: Cross multiply
    12,281.88x = 18,423.40 × 3,518.08
  4. Step 4: Simplify right side
    12,281.88x = 64,814,995.07
  5. Step 5: Solve for x
    x = 64,814,995.07/12,281.88
  6. Step 6: Final answer
    x = 5,277.29

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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.