Home / 28,617.84-39,492.95-15,871.28

Finding the Fourth Proportional to 28,617.84, 39,492.95 and 15,871.28

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Solution

The fourth proportional to 28,617.84, 39,492.95 and 15,871.28 is: 21,902.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,617.84 : 39,492.95 = 15,871.28 : x
  2. Step 2: Convert to fraction form
    28,617.84/39,492.95 = 15,871.28/x
  3. Step 3: Cross multiply
    28,617.84x = 39,492.95 × 15,871.28
  4. Step 4: Simplify right side
    28,617.84x = 626,803,390.65
  5. Step 5: Solve for x
    x = 626,803,390.65/28,617.84
  6. Step 6: Final answer
    x = 21,902.54

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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.