Home / 21,209.49-29,300.54-13,958.67

Finding the Fourth Proportional to 21,209.49, 29,300.54 and 13,958.67

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Solution

The fourth proportional to 21,209.49, 29,300.54 and 13,958.67 is: 19,283.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,209.49 : 29,300.54 = 13,958.67 : x
  2. Step 2: Convert to fraction form
    21,209.49/29,300.54 = 13,958.67/x
  3. Step 3: Cross multiply
    21,209.49x = 29,300.54 × 13,958.67
  4. Step 4: Simplify right side
    21,209.49x = 408,996,608.77
  5. Step 5: Solve for x
    x = 408,996,608.77/21,209.49
  6. Step 6: Final answer
    x = 19,283.66

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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.