Home / 20,420.52-28,182.50-11,467.56

Finding the Fourth Proportional to 20,420.52, 28,182.50 and 11,467.56

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Solution

The fourth proportional to 20,420.52, 28,182.50 and 11,467.56 is: 15,826.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,420.52 : 28,182.50 = 11,467.56 : x
  2. Step 2: Convert to fraction form
    20,420.52/28,182.50 = 11,467.56/x
  3. Step 3: Cross multiply
    20,420.52x = 28,182.50 × 11,467.56
  4. Step 4: Simplify right side
    20,420.52x = 323,184,509.70
  5. Step 5: Solve for x
    x = 323,184,509.70/20,420.52
  6. Step 6: Final answer
    x = 15,826.46

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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.