Home / 13,771,856.80-20,657,785.20-12,921,551.20

Finding the Fourth Proportional to 13,771,856.80, 20,657,785.20 and 12,921,551.20

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Solution

The fourth proportional to 13,771,856.80, 20,657,785.20 and 12,921,551.20 is: 19,382,326.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771,856.80 : 20,657,785.20 = 12,921,551.20 : x
  2. Step 2: Convert to fraction form
    13,771,856.80/20,657,785.20 = 12,921,551.20/x
  3. Step 3: Cross multiply
    13,771,856.80x = 20,657,785.20 × 12,921,551.20
  4. Step 4: Simplify right side
    13,771,856.80x = 266,930,629,140,402.22
  5. Step 5: Solve for x
    x = 266,930,629,140,402.22/13,771,856.80
  6. Step 6: Final answer
    x = 19,382,326.80

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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.