Home / 20,210.40-30,283.20-13,276.80

Finding the Fourth Proportional to 20,210.40, 30,283.20 and 13,276.80

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Solution

The fourth proportional to 20,210.40, 30,283.20 and 13,276.80 is: 19,893.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,210.40 : 30,283.20 = 13,276.80 : x
  2. Step 2: Convert to fraction form
    20,210.40/30,283.20 = 13,276.80/x
  3. Step 3: Cross multiply
    20,210.40x = 30,283.20 × 13,276.80
  4. Step 4: Simplify right side
    20,210.40x = 402,063,989.76
  5. Step 5: Solve for x
    x = 402,063,989.76/20,210.40
  6. Step 6: Final answer
    x = 19,893.92

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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.