Home / 20,430.04-28,200.60-12,046

Finding the Fourth Proportional to 20,430.04, 28,200.60 and 12,046

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Solution

The fourth proportional to 20,430.04, 28,200.60 and 12,046 is: 16,627.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,430.04 : 28,200.60 = 12,046 : x
  2. Step 2: Convert to fraction form
    20,430.04/28,200.60 = 12,046/x
  3. Step 3: Cross multiply
    20,430.04x = 28,200.60 × 12,046
  4. Step 4: Simplify right side
    20,430.04x = 339,704,427.60
  5. Step 5: Solve for x
    x = 339,704,427.60/20,430.04
  6. Step 6: Final answer
    x = 16,627.69

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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.