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Finding the Fourth Proportional to 13,480,328.20, 18,906,051.80 and 13,480,328.20

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Solution

The fourth proportional to 13,480,328.20, 18,906,051.80 and 13,480,328.20 is: 18,906,051.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480,328.20 : 18,906,051.80 = 13,480,328.20 : x
  2. Step 2: Convert to fraction form
    13,480,328.20/18,906,051.80 = 13,480,328.20/x
  3. Step 3: Cross multiply
    13,480,328.20x = 18,906,051.80 × 13,480,328.20
  4. Step 4: Simplify right side
    13,480,328.20x = 254,859,783,230,200.75
  5. Step 5: Solve for x
    x = 254,859,783,230,200.75/13,480,328.20
  6. Step 6: Final answer
    x = 18,906,051.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.