Home / 18,927.60-28,391.28-5,779.92

Finding the Fourth Proportional to 18,927.60, 28,391.28 and 5,779.92

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Solution

The fourth proportional to 18,927.60, 28,391.28 and 5,779.92 is: 8,669.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,927.60 : 28,391.28 = 5,779.92 : x
  2. Step 2: Convert to fraction form
    18,927.60/28,391.28 = 5,779.92/x
  3. Step 3: Cross multiply
    18,927.60x = 28,391.28 × 5,779.92
  4. Step 4: Simplify right side
    18,927.60x = 164,099,327.10
  5. Step 5: Solve for x
    x = 164,099,327.10/18,927.60
  6. Step 6: Final answer
    x = 8,669.84

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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.