Home / 19,678.47-29,513.07-5,638.29

Finding the Fourth Proportional to 19,678.47, 29,513.07 and 5,638.29

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Solution

The fourth proportional to 19,678.47, 29,513.07 and 5,638.29 is: 8,456.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,678.47 : 29,513.07 = 5,638.29 : x
  2. Step 2: Convert to fraction form
    19,678.47/29,513.07 = 5,638.29/x
  3. Step 3: Cross multiply
    19,678.47x = 29,513.07 × 5,638.29
  4. Step 4: Simplify right side
    19,678.47x = 166,403,247.45
  5. Step 5: Solve for x
    x = 166,403,247.45/19,678.47
  6. Step 6: Final answer
    x = 8,456.11

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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.