Home / 19,790.40-29,685.60-4,999.36

Finding the Fourth Proportional to 19,790.40, 29,685.60 and 4,999.36

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Solution

The fourth proportional to 19,790.40, 29,685.60 and 4,999.36 is: 7,499.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,790.40 : 29,685.60 = 4,999.36 : x
  2. Step 2: Convert to fraction form
    19,790.40/29,685.60 = 4,999.36/x
  3. Step 3: Cross multiply
    19,790.40x = 29,685.60 × 4,999.36
  4. Step 4: Simplify right side
    19,790.40x = 148,409,001.22
  5. Step 5: Solve for x
    x = 148,409,001.22/19,790.40
  6. Step 6: Final answer
    x = 7,499.04

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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.