Home / 28,605.70-39,476.20-15,859.04

Finding the Fourth Proportional to 28,605.70, 39,476.20 and 15,859.04

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Solution

The fourth proportional to 28,605.70, 39,476.20 and 15,859.04 is: 21,885.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,605.70 : 39,476.20 = 15,859.04 : x
  2. Step 2: Convert to fraction form
    28,605.70/39,476.20 = 15,859.04/x
  3. Step 3: Cross multiply
    28,605.70x = 39,476.20 × 15,859.04
  4. Step 4: Simplify right side
    28,605.70x = 626,054,665.21
  5. Step 5: Solve for x
    x = 626,054,665.21/28,605.70
  6. Step 6: Final answer
    x = 21,885.66

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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.