Home / 21,260.76-29,330.03-13,709.52

Finding the Fourth Proportional to 21,260.76, 29,330.03 and 13,709.52

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Solution

The fourth proportional to 21,260.76, 29,330.03 and 13,709.52 is: 18,912.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,260.76 : 29,330.03 = 13,709.52 : x
  2. Step 2: Convert to fraction form
    21,260.76/29,330.03 = 13,709.52/x
  3. Step 3: Cross multiply
    21,260.76x = 29,330.03 × 13,709.52
  4. Step 4: Simplify right side
    21,260.76x = 402,100,564.34
  5. Step 5: Solve for x
    x = 402,100,564.34/21,260.76
  6. Step 6: Final answer
    x = 18,912.80

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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.