Home / 18,018.86-27,028.89-4,871.34

Finding the Fourth Proportional to 18,018.86, 27,028.89 and 4,871.34

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Solution

The fourth proportional to 18,018.86, 27,028.89 and 4,871.34 is: 7,307.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,018.86 : 27,028.89 = 4,871.34 : x
  2. Step 2: Convert to fraction form
    18,018.86/27,028.89 = 4,871.34/x
  3. Step 3: Cross multiply
    18,018.86x = 27,028.89 × 4,871.34
  4. Step 4: Simplify right side
    18,018.86x = 131,666,913.01
  5. Step 5: Solve for x
    x = 131,666,913.01/18,018.86
  6. Step 6: Final answer
    x = 7,307.17

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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.