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Finding the Fourth Proportional to 20,718.69, 28,582.02 and 14,006.67

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Solution

The fourth proportional to 20,718.69, 28,582.02 and 14,006.67 is: 19,322.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,718.69 : 28,582.02 = 14,006.67 : x
  2. Step 2: Convert to fraction form
    20,718.69/28,582.02 = 14,006.67/x
  3. Step 3: Cross multiply
    20,718.69x = 28,582.02 × 14,006.67
  4. Step 4: Simplify right side
    20,718.69x = 400,338,922.07
  5. Step 5: Solve for x
    x = 400,338,922.07/20,718.69
  6. Step 6: Final answer
    x = 19,322.60

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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.