Home / 20,475.59-28,260.23-12,822.44

Finding the Fourth Proportional to 20,475.59, 28,260.23 and 12,822.44

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Solution

The fourth proportional to 20,475.59, 28,260.23 and 12,822.44 is: 17,697.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,475.59 : 28,260.23 = 12,822.44 : x
  2. Step 2: Convert to fraction form
    20,475.59/28,260.23 = 12,822.44/x
  3. Step 3: Cross multiply
    20,475.59x = 28,260.23 × 12,822.44
  4. Step 4: Simplify right side
    20,475.59x = 362,364,898.15
  5. Step 5: Solve for x
    x = 362,364,898.15/20,475.59
  6. Step 6: Final answer
    x = 17,697.41

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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.