Home / 28,605.96-39,477.18-15,858.38

Finding the Fourth Proportional to 28,605.96, 39,477.18 and 15,858.38

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Solution

The fourth proportional to 28,605.96, 39,477.18 and 15,858.38 is: 21,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,605.96 : 39,477.18 = 15,858.38 : x
  2. Step 2: Convert to fraction form
    28,605.96/39,477.18 = 15,858.38/x
  3. Step 3: Cross multiply
    28,605.96x = 39,477.18 × 15,858.38
  4. Step 4: Simplify right side
    28,605.96x = 626,044,121.77
  5. Step 5: Solve for x
    x = 626,044,121.77/28,605.96
  6. Step 6: Final answer
    x = 21,885.10

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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.