Home / 28,777.34-43,145.90-12,758.16

Finding the Fourth Proportional to 28,777.34, 43,145.90 and 12,758.16

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Solution

The fourth proportional to 28,777.34, 43,145.90 and 12,758.16 is: 19,128.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,777.34 : 43,145.90 = 12,758.16 : x
  2. Step 2: Convert to fraction form
    28,777.34/43,145.90 = 12,758.16/x
  3. Step 3: Cross multiply
    28,777.34x = 43,145.90 × 12,758.16
  4. Step 4: Simplify right side
    28,777.34x = 550,462,295.54
  5. Step 5: Solve for x
    x = 550,462,295.54/28,777.34
  6. Step 6: Final answer
    x = 19,128.32

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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.