Home / 27,819.90-38,392.16-15,884.35

Finding the Fourth Proportional to 27,819.90, 38,392.16 and 15,884.35

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Solution

The fourth proportional to 27,819.90, 38,392.16 and 15,884.35 is: 21,920.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,819.90 : 38,392.16 = 15,884.35 : x
  2. Step 2: Convert to fraction form
    27,819.90/38,392.16 = 15,884.35/x
  3. Step 3: Cross multiply
    27,819.90x = 38,392.16 × 15,884.35
  4. Step 4: Simplify right side
    27,819.90x = 609,834,331.29
  5. Step 5: Solve for x
    x = 609,834,331.29/27,819.90
  6. Step 6: Final answer
    x = 21,920.80

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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.