Home / 20,307.69-28,006.38-12,754.71

Finding the Fourth Proportional to 20,307.69, 28,006.38 and 12,754.71

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Solution

The fourth proportional to 20,307.69, 28,006.38 and 12,754.71 is: 17,590.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,307.69 : 28,006.38 = 12,754.71 : x
  2. Step 2: Convert to fraction form
    20,307.69/28,006.38 = 12,754.71/x
  3. Step 3: Cross multiply
    20,307.69x = 28,006.38 × 12,754.71
  4. Step 4: Simplify right side
    20,307.69x = 357,213,255.05
  5. Step 5: Solve for x
    x = 357,213,255.05/20,307.69
  6. Step 6: Final answer
    x = 17,590.05

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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.