Home / 20,318.42-28,041.53-11,704.90

Finding the Fourth Proportional to 20,318.42, 28,041.53 and 11,704.90

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Solution

The fourth proportional to 20,318.42, 28,041.53 and 11,704.90 is: 16,153.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,318.42 : 28,041.53 = 11,704.90 : x
  2. Step 2: Convert to fraction form
    20,318.42/28,041.53 = 11,704.90/x
  3. Step 3: Cross multiply
    20,318.42x = 28,041.53 × 11,704.90
  4. Step 4: Simplify right side
    20,318.42x = 328,223,304.50
  5. Step 5: Solve for x
    x = 328,223,304.50/20,318.42
  6. Step 6: Final answer
    x = 16,153.98

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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.