Home / 19,875.93-27,428.84-11,918.14

Finding the Fourth Proportional to 19,875.93, 27,428.84 and 11,918.14

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Solution

The fourth proportional to 19,875.93, 27,428.84 and 11,918.14 is: 16,447.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,875.93 : 27,428.84 = 11,918.14 : x
  2. Step 2: Convert to fraction form
    19,875.93/27,428.84 = 11,918.14/x
  3. Step 3: Cross multiply
    19,875.93x = 27,428.84 × 11,918.14
  4. Step 4: Simplify right side
    19,875.93x = 326,900,755.16
  5. Step 5: Solve for x
    x = 326,900,755.16/19,875.93
  6. Step 6: Final answer
    x = 16,447.07

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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.