Home / 14,151.85-21,225.42-4,288.78

Finding the Fourth Proportional to 14,151.85, 21,225.42 and 4,288.78

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Solution

The fourth proportional to 14,151.85, 21,225.42 and 4,288.78 is: 6,432.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,151.85 : 21,225.42 = 4,288.78 : x
  2. Step 2: Convert to fraction form
    14,151.85/21,225.42 = 4,288.78/x
  3. Step 3: Cross multiply
    14,151.85x = 21,225.42 × 4,288.78
  4. Step 4: Simplify right side
    14,151.85x = 91,031,156.79
  5. Step 5: Solve for x
    x = 91,031,156.79/14,151.85
  6. Step 6: Final answer
    x = 6,432.46

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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.