Home / 19,421.02-29,128.11-5,189.57

Finding the Fourth Proportional to 19,421.02, 29,128.11 and 5,189.57

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Solution

The fourth proportional to 19,421.02, 29,128.11 and 5,189.57 is: 7,783.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,421.02 : 29,128.11 = 5,189.57 : x
  2. Step 2: Convert to fraction form
    19,421.02/29,128.11 = 5,189.57/x
  3. Step 3: Cross multiply
    19,421.02x = 29,128.11 × 5,189.57
  4. Step 4: Simplify right side
    19,421.02x = 151,162,309.94
  5. Step 5: Solve for x
    x = 151,162,309.94/19,421.02
  6. Step 6: Final answer
    x = 7,783.44

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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.