Home / 28,204.70-38,921.82-15,457.46

Finding the Fourth Proportional to 28,204.70, 38,921.82 and 15,457.46

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Solution

The fourth proportional to 28,204.70, 38,921.82 and 15,457.46 is: 21,330.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,204.70 : 38,921.82 = 15,457.46 : x
  2. Step 2: Convert to fraction form
    28,204.70/38,921.82 = 15,457.46/x
  3. Step 3: Cross multiply
    28,204.70x = 38,921.82 × 15,457.46
  4. Step 4: Simplify right side
    28,204.70x = 601,632,475.78
  5. Step 5: Solve for x
    x = 601,632,475.78/28,204.70
  6. Step 6: Final answer
    x = 21,330.93

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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.