Home / 27,643.74-38,146.86-15,705.42

Finding the Fourth Proportional to 27,643.74, 38,146.86 and 15,705.42

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Solution

The fourth proportional to 27,643.74, 38,146.86 and 15,705.42 is: 21,672.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,643.74 : 38,146.86 = 15,705.42 : x
  2. Step 2: Convert to fraction form
    27,643.74/38,146.86 = 15,705.42/x
  3. Step 3: Cross multiply
    27,643.74x = 38,146.86 × 15,705.42
  4. Step 4: Simplify right side
    27,643.74x = 599,112,457.98
  5. Step 5: Solve for x
    x = 599,112,457.98/27,643.74
  6. Step 6: Final answer
    x = 21,672.63

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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.