Home / 28,819.13-39,771-16,243.88

Finding the Fourth Proportional to 28,819.13, 39,771 and 16,243.88

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Solution

The fourth proportional to 28,819.13, 39,771 and 16,243.88 is: 22,416.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,819.13 : 39,771 = 16,243.88 : x
  2. Step 2: Convert to fraction form
    28,819.13/39,771 = 16,243.88/x
  3. Step 3: Cross multiply
    28,819.13x = 39,771 × 16,243.88
  4. Step 4: Simplify right side
    28,819.13x = 646,035,152.63
  5. Step 5: Solve for x
    x = 646,035,152.63/28,819.13
  6. Step 6: Final answer
    x = 22,416.89

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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.