Home / 21,308.18-29,403.14-12,358.67

Finding the Fourth Proportional to 21,308.18, 29,403.14 and 12,358.67

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Solution

The fourth proportional to 21,308.18, 29,403.14 and 12,358.67 is: 17,053.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.18 : 29,403.14 = 12,358.67 : x
  2. Step 2: Convert to fraction form
    21,308.18/29,403.14 = 12,358.67/x
  3. Step 3: Cross multiply
    21,308.18x = 29,403.14 × 12,358.67
  4. Step 4: Simplify right side
    21,308.18x = 363,383,495.41
  5. Step 5: Solve for x
    x = 363,383,495.41/21,308.18
  6. Step 6: Final answer
    x = 17,053.71

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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.