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Finding the Fourth Proportional to 14,041.69, 21,078.73 and 7,130.77

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Solution

The fourth proportional to 14,041.69, 21,078.73 and 7,130.77 is: 10,704.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,041.69 : 21,078.73 = 7,130.77 : x
  2. Step 2: Convert to fraction form
    14,041.69/21,078.73 = 7,130.77/x
  3. Step 3: Cross multiply
    14,041.69x = 21,078.73 × 7,130.77
  4. Step 4: Simplify right side
    14,041.69x = 150,307,531.74
  5. Step 5: Solve for x
    x = 150,307,531.74/14,041.69
  6. Step 6: Final answer
    x = 10,704.38

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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.