Home / 14,020.90-19,348.60-7,647.28

Finding the Fourth Proportional to 14,020.90, 19,348.60 and 7,647.28

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Solution

The fourth proportional to 14,020.90, 19,348.60 and 7,647.28 is: 10,553.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,020.90 : 19,348.60 = 7,647.28 : x
  2. Step 2: Convert to fraction form
    14,020.90/19,348.60 = 7,647.28/x
  3. Step 3: Cross multiply
    14,020.90x = 19,348.60 × 7,647.28
  4. Step 4: Simplify right side
    14,020.90x = 147,964,161.81
  5. Step 5: Solve for x
    x = 147,964,161.81/14,020.90
  6. Step 6: Final answer
    x = 10,553.11

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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.