Home / 20,461.60-28,236.54-12,503.80

Finding the Fourth Proportional to 20,461.60, 28,236.54 and 12,503.80

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Solution

The fourth proportional to 20,461.60, 28,236.54 and 12,503.80 is: 17,254.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,461.60 : 28,236.54 = 12,503.80 : x
  2. Step 2: Convert to fraction form
    20,461.60/28,236.54 = 12,503.80/x
  3. Step 3: Cross multiply
    20,461.60x = 28,236.54 × 12,503.80
  4. Step 4: Simplify right side
    20,461.60x = 353,064,048.85
  5. Step 5: Solve for x
    x = 353,064,048.85/20,461.60
  6. Step 6: Final answer
    x = 17,254.96

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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.