Home / 28,247.76-38,981.79-15,672.51

Finding the Fourth Proportional to 28,247.76, 38,981.79 and 15,672.51

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Solution

The fourth proportional to 28,247.76, 38,981.79 and 15,672.51 is: 21,628.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,247.76 : 38,981.79 = 15,672.51 : x
  2. Step 2: Convert to fraction form
    28,247.76/38,981.79 = 15,672.51/x
  3. Step 3: Cross multiply
    28,247.76x = 38,981.79 × 15,672.51
  4. Step 4: Simplify right side
    28,247.76x = 610,942,493.59
  5. Step 5: Solve for x
    x = 610,942,493.59/28,247.76
  6. Step 6: Final answer
    x = 21,628.00

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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.