Home / 28,384.66-39,170.49-15,637.59

Finding the Fourth Proportional to 28,384.66, 39,170.49 and 15,637.59

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Solution

The fourth proportional to 28,384.66, 39,170.49 and 15,637.59 is: 21,579.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,384.66 : 39,170.49 = 15,637.59 : x
  2. Step 2: Convert to fraction form
    28,384.66/39,170.49 = 15,637.59/x
  3. Step 3: Cross multiply
    28,384.66x = 39,170.49 × 15,637.59
  4. Step 4: Simplify right side
    28,384.66x = 612,531,788.68
  5. Step 5: Solve for x
    x = 612,531,788.68/28,384.66
  6. Step 6: Final answer
    x = 21,579.68

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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.