Home / 18,189.02-27,278.53-12,908.36

Finding the Fourth Proportional to 18,189.02, 27,278.53 and 12,908.36

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Solution

The fourth proportional to 18,189.02, 27,278.53 and 12,908.36 is: 19,358.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,189.02 : 27,278.53 = 12,908.36 : x
  2. Step 2: Convert to fraction form
    18,189.02/27,278.53 = 12,908.36/x
  3. Step 3: Cross multiply
    18,189.02x = 27,278.53 × 12,908.36
  4. Step 4: Simplify right side
    18,189.02x = 352,121,085.51
  5. Step 5: Solve for x
    x = 352,121,085.51/18,189.02
  6. Step 6: Final answer
    x = 19,358.99

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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.