Home / 20,315.04-28,033.89-11,817.18

Finding the Fourth Proportional to 20,315.04, 28,033.89 and 11,817.18

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Solution

The fourth proportional to 20,315.04, 28,033.89 and 11,817.18 is: 16,307.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,315.04 : 28,033.89 = 11,817.18 : x
  2. Step 2: Convert to fraction form
    20,315.04/28,033.89 = 11,817.18/x
  3. Step 3: Cross multiply
    20,315.04x = 28,033.89 × 11,817.18
  4. Step 4: Simplify right side
    20,315.04x = 331,281,524.23
  5. Step 5: Solve for x
    x = 331,281,524.23/20,315.04
  6. Step 6: Final answer
    x = 16,307.21

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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.