Home / 12,455,880.12-18,668,873.40-6,387,488.20

Finding the Fourth Proportional to 12,455,880.12, 18,668,873.40 and 6,387,488.20

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Solution

The fourth proportional to 12,455,880.12, 18,668,873.40 and 6,387,488.20 is: 9,573,567.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455,880.12 : 18,668,873.40 = 6,387,488.20 : x
  2. Step 2: Convert to fraction form
    12,455,880.12/18,668,873.40 = 6,387,488.20/x
  3. Step 3: Cross multiply
    12,455,880.12x = 18,668,873.40 × 6,387,488.20
  4. Step 4: Simplify right side
    12,455,880.12x = 119,247,208,549,793.88
  5. Step 5: Solve for x
    x = 119,247,208,549,793.88/12,455,880.12
  6. Step 6: Final answer
    x = 9,573,567.46

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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.