Home / 18,386.72-27,573.40-7,857.46

Finding the Fourth Proportional to 18,386.72, 27,573.40 and 7,857.46

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Solution

The fourth proportional to 18,386.72, 27,573.40 and 7,857.46 is: 11,783.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,386.72 : 27,573.40 = 7,857.46 : x
  2. Step 2: Convert to fraction form
    18,386.72/27,573.40 = 7,857.46/x
  3. Step 3: Cross multiply
    18,386.72x = 27,573.40 × 7,857.46
  4. Step 4: Simplify right side
    18,386.72x = 216,656,887.56
  5. Step 5: Solve for x
    x = 216,656,887.56/18,386.72
  6. Step 6: Final answer
    x = 11,783.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.