Home / 18,885,877.60-28,328,816.40-13,146,314.80

Finding the Fourth Proportional to 18,885,877.60, 28,328,816.40 and 13,146,314.80

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Solution

The fourth proportional to 18,885,877.60, 28,328,816.40 and 13,146,314.80 is: 19,719,472.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885,877.60 : 28,328,816.40 = 13,146,314.80 : x
  2. Step 2: Convert to fraction form
    18,885,877.60/28,328,816.40 = 13,146,314.80/x
  3. Step 3: Cross multiply
    18,885,877.60x = 28,328,816.40 × 13,146,314.80
  4. Step 4: Simplify right side
    18,885,877.60x = 372,419,538,305,802.75
  5. Step 5: Solve for x
    x = 372,419,538,305,802.75/18,885,877.60
  6. Step 6: Final answer
    x = 19,719,472.20

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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.