Home / 15,445.77-21,308.39-11,854.39

Finding the Fourth Proportional to 15,445.77, 21,308.39 and 11,854.39

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Solution

The fourth proportional to 15,445.77, 21,308.39 and 11,854.39 is: 16,353.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,445.77 : 21,308.39 = 11,854.39 : x
  2. Step 2: Convert to fraction form
    15,445.77/21,308.39 = 11,854.39/x
  3. Step 3: Cross multiply
    15,445.77x = 21,308.39 × 11,854.39
  4. Step 4: Simplify right side
    15,445.77x = 252,598,000.40
  5. Step 5: Solve for x
    x = 252,598,000.40/15,445.77
  6. Step 6: Final answer
    x = 16,353.86

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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.