Home / 19,000.12-28,500.59-6,520.05

Finding the Fourth Proportional to 19,000.12, 28,500.59 and 6,520.05

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Solution

The fourth proportional to 19,000.12, 28,500.59 and 6,520.05 is: 9,780.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,000.12 : 28,500.59 = 6,520.05 : x
  2. Step 2: Convert to fraction form
    19,000.12/28,500.59 = 6,520.05/x
  3. Step 3: Cross multiply
    19,000.12x = 28,500.59 × 6,520.05
  4. Step 4: Simplify right side
    19,000.12x = 185,825,271.83
  5. Step 5: Solve for x
    x = 185,825,271.83/19,000.12
  6. Step 6: Final answer
    x = 9,780.22

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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.