Home / 19,875.89-27,428.68-11,378.04

Finding the Fourth Proportional to 19,875.89, 27,428.68 and 11,378.04

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Solution

The fourth proportional to 19,875.89, 27,428.68 and 11,378.04 is: 15,701.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,875.89 : 27,428.68 = 11,378.04 : x
  2. Step 2: Convert to fraction form
    19,875.89/27,428.68 = 11,378.04/x
  3. Step 3: Cross multiply
    19,875.89x = 27,428.68 × 11,378.04
  4. Step 4: Simplify right side
    19,875.89x = 312,084,618.19
  5. Step 5: Solve for x
    x = 312,084,618.19/19,875.89
  6. Step 6: Final answer
    x = 15,701.67

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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.