Home / 28,247.07-38,981.69-15,500.81

Finding the Fourth Proportional to 28,247.07, 38,981.69 and 15,500.81

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Solution

The fourth proportional to 28,247.07, 38,981.69 and 15,500.81 is: 21,391.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,247.07 : 38,981.69 = 15,500.81 : x
  2. Step 2: Convert to fraction form
    28,247.07/38,981.69 = 15,500.81/x
  3. Step 3: Cross multiply
    28,247.07x = 38,981.69 × 15,500.81
  4. Step 4: Simplify right side
    28,247.07x = 604,247,497.76
  5. Step 5: Solve for x
    x = 604,247,497.76/28,247.07
  6. Step 6: Final answer
    x = 21,391.51

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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.