Home / 19,431.01-29,155.73-8,340.86

Finding the Fourth Proportional to 19,431.01, 29,155.73 and 8,340.86

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Solution

The fourth proportional to 19,431.01, 29,155.73 and 8,340.86 is: 12,515.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,431.01 : 29,155.73 = 8,340.86 : x
  2. Step 2: Convert to fraction form
    19,431.01/29,155.73 = 8,340.86/x
  3. Step 3: Cross multiply
    19,431.01x = 29,155.73 × 8,340.86
  4. Step 4: Simplify right side
    19,431.01x = 243,183,776.23
  5. Step 5: Solve for x
    x = 243,183,776.23/19,431.01
  6. Step 6: Final answer
    x = 12,515.24

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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.