Home / 28,071.84-38,738.88-15,496.68

Finding the Fourth Proportional to 28,071.84, 38,738.88 and 15,496.68

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Solution

The fourth proportional to 28,071.84, 38,738.88 and 15,496.68 is: 21,385.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,071.84 : 38,738.88 = 15,496.68 : x
  2. Step 2: Convert to fraction form
    28,071.84/38,738.88 = 15,496.68/x
  3. Step 3: Cross multiply
    28,071.84x = 38,738.88 × 15,496.68
  4. Step 4: Simplify right side
    28,071.84x = 600,324,026.92
  5. Step 5: Solve for x
    x = 600,324,026.92/28,071.84
  6. Step 6: Final answer
    x = 21,385.28

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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.