Home / 13,431,330.90-20,146,996.35-12,634,169.40

Finding the Fourth Proportional to 13,431,330.90, 20,146,996.35 and 12,634,169.40

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Solution

The fourth proportional to 13,431,330.90, 20,146,996.35 and 12,634,169.40 is: 18,951,254.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431,330.90 : 20,146,996.35 = 12,634,169.40 : x
  2. Step 2: Convert to fraction form
    13,431,330.90/20,146,996.35 = 12,634,169.40/x
  3. Step 3: Cross multiply
    13,431,330.90x = 20,146,996.35 × 12,634,169.40
  4. Step 4: Simplify right side
    13,431,330.90x = 254,540,564,787,081.72
  5. Step 5: Solve for x
    x = 254,540,564,787,081.72/13,431,330.90
  6. Step 6: Final answer
    x = 18,951,254.10

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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.