Home / 19,779.04-29,668.56-8,087.50

Finding the Fourth Proportional to 19,779.04, 29,668.56 and 8,087.50

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Solution

The fourth proportional to 19,779.04, 29,668.56 and 8,087.50 is: 12,131.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,779.04 : 29,668.56 = 8,087.50 : x
  2. Step 2: Convert to fraction form
    19,779.04/29,668.56 = 8,087.50/x
  3. Step 3: Cross multiply
    19,779.04x = 29,668.56 × 8,087.50
  4. Step 4: Simplify right side
    19,779.04x = 239,944,479
  5. Step 5: Solve for x
    x = 239,944,479/19,779.04
  6. Step 6: Final answer
    x = 12,131.25

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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.