Home / 27,643.14-38,148.42-15,705.76

Finding the Fourth Proportional to 27,643.14, 38,148.42 and 15,705.76

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Solution

The fourth proportional to 27,643.14, 38,148.42 and 15,705.76 is: 21,674.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,643.14 : 38,148.42 = 15,705.76 : x
  2. Step 2: Convert to fraction form
    27,643.14/38,148.42 = 15,705.76/x
  3. Step 3: Cross multiply
    27,643.14x = 38,148.42 × 15,705.76
  4. Step 4: Simplify right side
    27,643.14x = 599,149,928.90
  5. Step 5: Solve for x
    x = 599,149,928.90/27,643.14
  6. Step 6: Final answer
    x = 21,674.45

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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.