Home / 28,343.34-39,113.82-15,768

Finding the Fourth Proportional to 28,343.34, 39,113.82 and 15,768

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Solution

The fourth proportional to 28,343.34, 39,113.82 and 15,768 is: 21,759.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,343.34 : 39,113.82 = 15,768 : x
  2. Step 2: Convert to fraction form
    28,343.34/39,113.82 = 15,768/x
  3. Step 3: Cross multiply
    28,343.34x = 39,113.82 × 15,768
  4. Step 4: Simplify right side
    28,343.34x = 616,746,713.76
  5. Step 5: Solve for x
    x = 616,746,713.76/28,343.34
  6. Step 6: Final answer
    x = 21,759.85

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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.