Home / 18,709.55-25,818.53-11,151.98

Finding the Fourth Proportional to 18,709.55, 25,818.53 and 11,151.98

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Solution

The fourth proportional to 18,709.55, 25,818.53 and 11,151.98 is: 15,389.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.55 : 25,818.53 = 11,151.98 : x
  2. Step 2: Convert to fraction form
    18,709.55/25,818.53 = 11,151.98/x
  3. Step 3: Cross multiply
    18,709.55x = 25,818.53 × 11,151.98
  4. Step 4: Simplify right side
    18,709.55x = 287,927,860.86
  5. Step 5: Solve for x
    x = 287,927,860.86/18,709.55
  6. Step 6: Final answer
    x = 15,389.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.