Home / 18,729.90-28,094.85-10,405.94

Finding the Fourth Proportional to 18,729.90, 28,094.85 and 10,405.94

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Solution

The fourth proportional to 18,729.90, 28,094.85 and 10,405.94 is: 15,608.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.90 : 28,094.85 = 10,405.94 : x
  2. Step 2: Convert to fraction form
    18,729.90/28,094.85 = 10,405.94/x
  3. Step 3: Cross multiply
    18,729.90x = 28,094.85 × 10,405.94
  4. Step 4: Simplify right side
    18,729.90x = 292,353,182.93
  5. Step 5: Solve for x
    x = 292,353,182.93/18,729.90
  6. Step 6: Final answer
    x = 15,608.90

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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.