Home / 12,307.74-18,464.28-3,988.59

Finding the Fourth Proportional to 12,307.74, 18,464.28 and 3,988.59

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Solution

The fourth proportional to 12,307.74, 18,464.28 and 3,988.59 is: 5,983.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,307.74 : 18,464.28 = 3,988.59 : x
  2. Step 2: Convert to fraction form
    12,307.74/18,464.28 = 3,988.59/x
  3. Step 3: Cross multiply
    12,307.74x = 18,464.28 × 3,988.59
  4. Step 4: Simplify right side
    12,307.74x = 73,646,442.57
  5. Step 5: Solve for x
    x = 73,646,442.57/12,307.74
  6. Step 6: Final answer
    x = 5,983.75

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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.