Home / 20,537.69-28,336.03-13,830.89

Finding the Fourth Proportional to 20,537.69, 28,336.03 and 13,830.89

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Solution

The fourth proportional to 20,537.69, 28,336.03 and 13,830.89 is: 19,082.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,537.69 : 28,336.03 = 13,830.89 : x
  2. Step 2: Convert to fraction form
    20,537.69/28,336.03 = 13,830.89/x
  3. Step 3: Cross multiply
    20,537.69x = 28,336.03 × 13,830.89
  4. Step 4: Simplify right side
    20,537.69x = 391,912,337.71
  5. Step 5: Solve for x
    x = 391,912,337.71/20,537.69
  6. Step 6: Final answer
    x = 19,082.60

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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.