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Finding the Fourth Proportional to 19,779.74, 29,660.01 and 7,305.64

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Solution

The fourth proportional to 19,779.74, 29,660.01 and 7,305.64 is: 10,954.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,779.74 : 29,660.01 = 7,305.64 : x
  2. Step 2: Convert to fraction form
    19,779.74/29,660.01 = 7,305.64/x
  3. Step 3: Cross multiply
    19,779.74x = 29,660.01 × 7,305.64
  4. Step 4: Simplify right side
    19,779.74x = 216,685,355.46
  5. Step 5: Solve for x
    x = 216,685,355.46/19,779.74
  6. Step 6: Final answer
    x = 10,954.91

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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.