Home / 19,790.78-29,686.16-4,999.74

Finding the Fourth Proportional to 19,790.78, 29,686.16 and 4,999.74

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Solution

The fourth proportional to 19,790.78, 29,686.16 and 4,999.74 is: 7,499.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,790.78 : 29,686.16 = 4,999.74 : x
  2. Step 2: Convert to fraction form
    19,790.78/29,686.16 = 4,999.74/x
  3. Step 3: Cross multiply
    19,790.78x = 29,686.16 × 4,999.74
  4. Step 4: Simplify right side
    19,790.78x = 148,422,945.67
  5. Step 5: Solve for x
    x = 148,422,945.67/19,790.78
  6. Step 6: Final answer
    x = 7,499.60

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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.