Home / 28,799.07-39,758.13-20,211.67

Finding the Fourth Proportional to 28,799.07, 39,758.13 and 20,211.67

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Solution

The fourth proportional to 28,799.07, 39,758.13 and 20,211.67 is: 27,902.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,799.07 : 39,758.13 = 20,211.67 : x
  2. Step 2: Convert to fraction form
    28,799.07/39,758.13 = 20,211.67/x
  3. Step 3: Cross multiply
    28,799.07x = 39,758.13 × 20,211.67
  4. Step 4: Simplify right side
    28,799.07x = 803,578,252.24
  5. Step 5: Solve for x
    x = 803,578,252.24/28,799.07
  6. Step 6: Final answer
    x = 27,902.93

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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.