Home / 19,271.68-28,909.35-7,429.55

Finding the Fourth Proportional to 19,271.68, 28,909.35 and 7,429.55

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Solution

The fourth proportional to 19,271.68, 28,909.35 and 7,429.55 is: 11,145.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,271.68 : 28,909.35 = 7,429.55 : x
  2. Step 2: Convert to fraction form
    19,271.68/28,909.35 = 7,429.55/x
  3. Step 3: Cross multiply
    19,271.68x = 28,909.35 × 7,429.55
  4. Step 4: Simplify right side
    19,271.68x = 214,783,316.75
  5. Step 5: Solve for x
    x = 214,783,316.75/19,271.68
  6. Step 6: Final answer
    x = 11,145.02

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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.