Home / 20,466.60-30,645.21-13,030.80

Finding the Fourth Proportional to 20,466.60, 30,645.21 and 13,030.80

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Solution

The fourth proportional to 20,466.60, 30,645.21 and 13,030.80 is: 19,511.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,466.60 : 30,645.21 = 13,030.80 : x
  2. Step 2: Convert to fraction form
    20,466.60/30,645.21 = 13,030.80/x
  3. Step 3: Cross multiply
    20,466.60x = 30,645.21 × 13,030.80
  4. Step 4: Simplify right side
    20,466.60x = 399,331,602.47
  5. Step 5: Solve for x
    x = 399,331,602.47/20,466.60
  6. Step 6: Final answer
    x = 19,511.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.