Home / 28,655.86-42,969.97-12,011.43

Finding the Fourth Proportional to 28,655.86, 42,969.97 and 12,011.43

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Solution

The fourth proportional to 28,655.86, 42,969.97 and 12,011.43 is: 18,011.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,655.86 : 42,969.97 = 12,011.43 : x
  2. Step 2: Convert to fraction form
    28,655.86/42,969.97 = 12,011.43/x
  3. Step 3: Cross multiply
    28,655.86x = 42,969.97 × 12,011.43
  4. Step 4: Simplify right side
    28,655.86x = 516,130,626.99
  5. Step 5: Solve for x
    x = 516,130,626.99/28,655.86
  6. Step 6: Final answer
    x = 18,011.34

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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.