Home / 28,192.18-38,907.58-15,618.10

Finding the Fourth Proportional to 28,192.18, 38,907.58 and 15,618.10

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Solution

The fourth proportional to 28,192.18, 38,907.58 and 15,618.10 is: 21,554.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,192.18 : 38,907.58 = 15,618.10 : x
  2. Step 2: Convert to fraction form
    28,192.18/38,907.58 = 15,618.10/x
  3. Step 3: Cross multiply
    28,192.18x = 38,907.58 × 15,618.10
  4. Step 4: Simplify right side
    28,192.18x = 607,662,475.20
  5. Step 5: Solve for x
    x = 607,662,475.20/28,192.18
  6. Step 6: Final answer
    x = 21,554.29

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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.