Home / 28,679.85-43,030.81-13,887.63

Finding the Fourth Proportional to 28,679.85, 43,030.81 and 13,887.63

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Solution

The fourth proportional to 28,679.85, 43,030.81 and 13,887.63 is: 20,836.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,679.85 : 43,030.81 = 13,887.63 : x
  2. Step 2: Convert to fraction form
    28,679.85/43,030.81 = 13,887.63/x
  3. Step 3: Cross multiply
    28,679.85x = 43,030.81 × 13,887.63
  4. Step 4: Simplify right side
    28,679.85x = 597,595,967.88
  5. Step 5: Solve for x
    x = 597,595,967.88/28,679.85
  6. Step 6: Final answer
    x = 20,836.79

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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.