Home / 10,681.12-16,021.86-4,830.90

Finding the Fourth Proportional to 10,681.12, 16,021.86 and 4,830.90

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Solution

The fourth proportional to 10,681.12, 16,021.86 and 4,830.90 is: 7,246.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,681.12 : 16,021.86 = 4,830.90 : x
  2. Step 2: Convert to fraction form
    10,681.12/16,021.86 = 4,830.90/x
  3. Step 3: Cross multiply
    10,681.12x = 16,021.86 × 4,830.90
  4. Step 4: Simplify right side
    10,681.12x = 77,400,003.47
  5. Step 5: Solve for x
    x = 77,400,003.47/10,681.12
  6. Step 6: Final answer
    x = 7,246.43

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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.