Home / 28,421.73-39,222.08-15,846.93

Finding the Fourth Proportional to 28,421.73, 39,222.08 and 15,846.93

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Solution

The fourth proportional to 28,421.73, 39,222.08 and 15,846.93 is: 21,868.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,421.73 : 39,222.08 = 15,846.93 : x
  2. Step 2: Convert to fraction form
    28,421.73/39,222.08 = 15,846.93/x
  3. Step 3: Cross multiply
    28,421.73x = 39,222.08 × 15,846.93
  4. Step 4: Simplify right side
    28,421.73x = 621,549,476.98
  5. Step 5: Solve for x
    x = 621,549,476.98/28,421.73
  6. Step 6: Final answer
    x = 21,868.81

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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.