Home / 28,243.01-38,975.39-15,667.76

Finding the Fourth Proportional to 28,243.01, 38,975.39 and 15,667.76

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Solution

The fourth proportional to 28,243.01, 38,975.39 and 15,667.76 is: 21,621.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,243.01 : 38,975.39 = 15,667.76 : x
  2. Step 2: Convert to fraction form
    28,243.01/38,975.39 = 15,667.76/x
  3. Step 3: Cross multiply
    28,243.01x = 38,975.39 × 15,667.76
  4. Step 4: Simplify right side
    28,243.01x = 610,657,056.43
  5. Step 5: Solve for x
    x = 610,657,056.43/28,243.01
  6. Step 6: Final answer
    x = 21,621.53

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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.