Home / 19,174.61-28,756.64-12,144.08

Finding the Fourth Proportional to 19,174.61, 28,756.64 and 12,144.08

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Solution

The fourth proportional to 19,174.61, 28,756.64 and 12,144.08 is: 18,212.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,174.61 : 28,756.64 = 12,144.08 : x
  2. Step 2: Convert to fraction form
    19,174.61/28,756.64 = 12,144.08/x
  3. Step 3: Cross multiply
    19,174.61x = 28,756.64 × 12,144.08
  4. Step 4: Simplify right side
    19,174.61x = 349,223,038.94
  5. Step 5: Solve for x
    x = 349,223,038.94/19,174.61
  6. Step 6: Final answer
    x = 18,212.78

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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.