Home / 13,485,920.80-20,228,881.20-13,391,442.40

Finding the Fourth Proportional to 13,485,920.80, 20,228,881.20 and 13,391,442.40

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Solution

The fourth proportional to 13,485,920.80, 20,228,881.20 and 13,391,442.40 is: 20,087,163.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485,920.80 : 20,228,881.20 = 13,391,442.40 : x
  2. Step 2: Convert to fraction form
    13,485,920.80/20,228,881.20 = 13,391,442.40/x
  3. Step 3: Cross multiply
    13,485,920.80x = 20,228,881.20 × 13,391,442.40
  4. Step 4: Simplify right side
    13,485,920.80x = 270,893,897,406,242.88
  5. Step 5: Solve for x
    x = 270,893,897,406,242.88/13,485,920.80
  6. Step 6: Final answer
    x = 20,087,163.60

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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.