Home / 27,652.77-38,160.81-15,715.80

Finding the Fourth Proportional to 27,652.77, 38,160.81 and 15,715.80

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Solution

The fourth proportional to 27,652.77, 38,160.81 and 15,715.80 is: 21,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,652.77 : 38,160.81 = 15,715.80 : x
  2. Step 2: Convert to fraction form
    27,652.77/38,160.81 = 15,715.80/x
  3. Step 3: Cross multiply
    27,652.77x = 38,160.81 × 15,715.80
  4. Step 4: Simplify right side
    27,652.77x = 599,727,657.80
  5. Step 5: Solve for x
    x = 599,727,657.80/27,652.77
  6. Step 6: Final answer
    x = 21,687.80

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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.