Home / 28,018.35-38,664.81-15,271.65

Finding the Fourth Proportional to 28,018.35, 38,664.81 and 15,271.65

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Solution

The fourth proportional to 28,018.35, 38,664.81 and 15,271.65 is: 21,074.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,018.35 : 38,664.81 = 15,271.65 : x
  2. Step 2: Convert to fraction form
    28,018.35/38,664.81 = 15,271.65/x
  3. Step 3: Cross multiply
    28,018.35x = 38,664.81 × 15,271.65
  4. Step 4: Simplify right side
    28,018.35x = 590,475,445.64
  5. Step 5: Solve for x
    x = 590,475,445.64/28,018.35
  6. Step 6: Final answer
    x = 21,074.60

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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.