Home / 28,745.28-43,111.44-7,970.40

Finding the Fourth Proportional to 28,745.28, 43,111.44 and 7,970.40

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Solution

The fourth proportional to 28,745.28, 43,111.44 and 7,970.40 is: 11,953.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,745.28 : 43,111.44 = 7,970.40 : x
  2. Step 2: Convert to fraction form
    28,745.28/43,111.44 = 7,970.40/x
  3. Step 3: Cross multiply
    28,745.28x = 43,111.44 × 7,970.40
  4. Step 4: Simplify right side
    28,745.28x = 343,615,421.38
  5. Step 5: Solve for x
    x = 343,615,421.38/28,745.28
  6. Step 6: Final answer
    x = 11,953.80

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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.