Home / 12,308.19-18,460.47-3,988.94

Finding the Fourth Proportional to 12,308.19, 18,460.47 and 3,988.94

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Solution

The fourth proportional to 12,308.19, 18,460.47 and 3,988.94 is: 5,982.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,308.19 : 18,460.47 = 3,988.94 : x
  2. Step 2: Convert to fraction form
    12,308.19/18,460.47 = 3,988.94/x
  3. Step 3: Cross multiply
    12,308.19x = 18,460.47 × 3,988.94
  4. Step 4: Simplify right side
    12,308.19x = 73,637,594.95
  5. Step 5: Solve for x
    x = 73,637,594.95/12,308.19
  6. Step 6: Final answer
    x = 5,982.81

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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.