Home / 12,938.38-17,848.35-8,683.91

Finding the Fourth Proportional to 12,938.38, 17,848.35 and 8,683.91

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Solution

The fourth proportional to 12,938.38, 17,848.35 and 8,683.91 is: 11,979.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,938.38 : 17,848.35 = 8,683.91 : x
  2. Step 2: Convert to fraction form
    12,938.38/17,848.35 = 8,683.91/x
  3. Step 3: Cross multiply
    12,938.38x = 17,848.35 × 8,683.91
  4. Step 4: Simplify right side
    12,938.38x = 154,993,442.74
  5. Step 5: Solve for x
    x = 154,993,442.74/12,938.38
  6. Step 6: Final answer
    x = 11,979.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.