Home / 27,665.36-38,178.01-15,728.70

Finding the Fourth Proportional to 27,665.36, 38,178.01 and 15,728.70

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Solution

The fourth proportional to 27,665.36, 38,178.01 and 15,728.70 is: 21,705.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,665.36 : 38,178.01 = 15,728.70 : x
  2. Step 2: Convert to fraction form
    27,665.36/38,178.01 = 15,728.70/x
  3. Step 3: Cross multiply
    27,665.36x = 38,178.01 × 15,728.70
  4. Step 4: Simplify right side
    27,665.36x = 600,490,275.00
  5. Step 5: Solve for x
    x = 600,490,275.00/27,665.36
  6. Step 6: Final answer
    x = 21,705.50

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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.