Home / 13,042.08-19,540.08-6,890.40

Finding the Fourth Proportional to 13,042.08, 19,540.08 and 6,890.40

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Solution

The fourth proportional to 13,042.08, 19,540.08 and 6,890.40 is: 10,323.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,042.08 : 19,540.08 = 6,890.40 : x
  2. Step 2: Convert to fraction form
    13,042.08/19,540.08 = 6,890.40/x
  3. Step 3: Cross multiply
    13,042.08x = 19,540.08 × 6,890.40
  4. Step 4: Simplify right side
    13,042.08x = 134,638,967.23
  5. Step 5: Solve for x
    x = 134,638,967.23/13,042.08
  6. Step 6: Final answer
    x = 10,323.43

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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.