Home / 27,515.61-37,971.99-15,578.64

Finding the Fourth Proportional to 27,515.61, 37,971.99 and 15,578.64

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Solution

The fourth proportional to 27,515.61, 37,971.99 and 15,578.64 is: 21,498.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,515.61 : 37,971.99 = 15,578.64 : x
  2. Step 2: Convert to fraction form
    27,515.61/37,971.99 = 15,578.64/x
  3. Step 3: Cross multiply
    27,515.61x = 37,971.99 × 15,578.64
  4. Step 4: Simplify right side
    27,515.61x = 591,551,962.29
  5. Step 5: Solve for x
    x = 591,551,962.29/27,515.61
  6. Step 6: Final answer
    x = 21,498.78

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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.