Home / 27,652.28-38,161.98-15,715.64

Finding the Fourth Proportional to 27,652.28, 38,161.98 and 15,715.64

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Solution

The fourth proportional to 27,652.28, 38,161.98 and 15,715.64 is: 21,688.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,652.28 : 38,161.98 = 15,715.64 : x
  2. Step 2: Convert to fraction form
    27,652.28/38,161.98 = 15,715.64/x
  3. Step 3: Cross multiply
    27,652.28x = 38,161.98 × 15,715.64
  4. Step 4: Simplify right side
    27,652.28x = 599,739,939.37
  5. Step 5: Solve for x
    x = 599,739,939.37/27,652.28
  6. Step 6: Final answer
    x = 21,688.63

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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.