Home / 28,618.49-39,492.42-15,872.20

Finding the Fourth Proportional to 28,618.49, 39,492.42 and 15,872.20

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Solution

The fourth proportional to 28,618.49, 39,492.42 and 15,872.20 is: 21,903.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,618.49 : 39,492.42 = 15,872.20 : x
  2. Step 2: Convert to fraction form
    28,618.49/39,492.42 = 15,872.20/x
  3. Step 3: Cross multiply
    28,618.49x = 39,492.42 × 15,872.20
  4. Step 4: Simplify right side
    28,618.49x = 626,831,391.26
  5. Step 5: Solve for x
    x = 626,831,391.26/28,618.49
  6. Step 6: Final answer
    x = 21,903.02

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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.