Home / 19,170.58-28,751.40-7,320.00

Finding the Fourth Proportional to 19,170.58, 28,751.40 and 7,320.00

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Solution

The fourth proportional to 19,170.58, 28,751.40 and 7,320.00 is: 10,978.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,170.58 : 28,751.40 = 7,320.00 : x
  2. Step 2: Convert to fraction form
    19,170.58/28,751.40 = 7,320.00/x
  3. Step 3: Cross multiply
    19,170.58x = 28,751.40 × 7,320.00
  4. Step 4: Simplify right side
    19,170.58x = 210,460,301.91
  5. Step 5: Solve for x
    x = 210,460,301.91/19,170.58
  6. Step 6: Final answer
    x = 10,978.30

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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.