Home / 19,779.91-29,666.67-7,305.81

Finding the Fourth Proportional to 19,779.91, 29,666.67 and 7,305.81

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Solution

The fourth proportional to 19,779.91, 29,666.67 and 7,305.81 is: 10,957.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,779.91 : 29,666.67 = 7,305.81 : x
  2. Step 2: Convert to fraction form
    19,779.91/29,666.67 = 7,305.81/x
  3. Step 3: Cross multiply
    19,779.91x = 29,666.67 × 7,305.81
  4. Step 4: Simplify right side
    19,779.91x = 216,739,054.35
  5. Step 5: Solve for x
    x = 216,739,054.35/19,779.91
  6. Step 6: Final answer
    x = 10,957.53

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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.