Home / 10,354.80-14,289.22-5,638.98

Finding the Fourth Proportional to 10,354.80, 14,289.22 and 5,638.98

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Solution

The fourth proportional to 10,354.80, 14,289.22 and 5,638.98 is: 7,781.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,354.80 : 14,289.22 = 5,638.98 : x
  2. Step 2: Convert to fraction form
    10,354.80/14,289.22 = 5,638.98/x
  3. Step 3: Cross multiply
    10,354.80x = 14,289.22 × 5,638.98
  4. Step 4: Simplify right side
    10,354.80x = 80,576,625.80
  5. Step 5: Solve for x
    x = 80,576,625.80/10,354.80
  6. Step 6: Final answer
    x = 7,781.57

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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.