Home / 19,271.12-28,901.01-8,171.69

Finding the Fourth Proportional to 19,271.12, 28,901.01 and 8,171.69

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Solution

The fourth proportional to 19,271.12, 28,901.01 and 8,171.69 is: 12,255.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,271.12 : 28,901.01 = 8,171.69 : x
  2. Step 2: Convert to fraction form
    19,271.12/28,901.01 = 8,171.69/x
  3. Step 3: Cross multiply
    19,271.12x = 28,901.01 × 8,171.69
  4. Step 4: Simplify right side
    19,271.12x = 236,170,094.41
  5. Step 5: Solve for x
    x = 236,170,094.41/19,271.12
  6. Step 6: Final answer
    x = 12,255.13

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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.