Home / 19,881.16-27,424.56-11,918.76

Finding the Fourth Proportional to 19,881.16, 27,424.56 and 11,918.76

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Solution

The fourth proportional to 19,881.16, 27,424.56 and 11,918.76 is: 16,441.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,881.16 : 27,424.56 = 11,918.76 : x
  2. Step 2: Convert to fraction form
    19,881.16/27,424.56 = 11,918.76/x
  3. Step 3: Cross multiply
    19,881.16x = 27,424.56 × 11,918.76
  4. Step 4: Simplify right side
    19,881.16x = 326,866,623.56
  5. Step 5: Solve for x
    x = 326,866,623.56/19,881.16
  6. Step 6: Final answer
    x = 16,441.03

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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.