Home / 18,835.60-28,256.64-7,748.32

Finding the Fourth Proportional to 18,835.60, 28,256.64 and 7,748.32

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Solution

The fourth proportional to 18,835.60, 28,256.64 and 7,748.32 is: 11,623.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,835.60 : 28,256.64 = 7,748.32 : x
  2. Step 2: Convert to fraction form
    18,835.60/28,256.64 = 7,748.32/x
  3. Step 3: Cross multiply
    18,835.60x = 28,256.64 × 7,748.32
  4. Step 4: Simplify right side
    18,835.60x = 218,941,488.84
  5. Step 5: Solve for x
    x = 218,941,488.84/18,835.60
  6. Step 6: Final answer
    x = 11,623.81

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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.