Home / 27,653.64-38,162.92-15,716.28

Finding the Fourth Proportional to 27,653.64, 38,162.92 and 15,716.28

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Solution

The fourth proportional to 27,653.64, 38,162.92 and 15,716.28 is: 21,688.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,653.64 : 38,162.92 = 15,716.28 : x
  2. Step 2: Convert to fraction form
    27,653.64/38,162.92 = 15,716.28/x
  3. Step 3: Cross multiply
    27,653.64x = 38,162.92 × 15,716.28
  4. Step 4: Simplify right side
    27,653.64x = 599,779,136.34
  5. Step 5: Solve for x
    x = 599,779,136.34/27,653.64
  6. Step 6: Final answer
    x = 21,688.98

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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.