Home / 27,653.90-38,164.65-15,720.98

Finding the Fourth Proportional to 27,653.90, 38,164.65 and 15,720.98

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Solution

The fourth proportional to 27,653.90, 38,164.65 and 15,720.98 is: 21,696.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,653.90 : 38,164.65 = 15,720.98 : x
  2. Step 2: Convert to fraction form
    27,653.90/38,164.65 = 15,720.98/x
  3. Step 3: Cross multiply
    27,653.90x = 38,164.65 × 15,720.98
  4. Step 4: Simplify right side
    27,653.90x = 599,985,699.36
  5. Step 5: Solve for x
    x = 599,985,699.36/27,653.90
  6. Step 6: Final answer
    x = 21,696.24

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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.