Home / 12,984,530.40-19,476,795.60-12,488,518.80

Finding the Fourth Proportional to 12,984,530.40, 19,476,795.60 and 12,488,518.80

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Solution

The fourth proportional to 12,984,530.40, 19,476,795.60 and 12,488,518.80 is: 18,732,778.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,984,530.40 : 19,476,795.60 = 12,488,518.80 : x
  2. Step 2: Convert to fraction form
    12,984,530.40/19,476,795.60 = 12,488,518.80/x
  3. Step 3: Cross multiply
    12,984,530.40x = 19,476,795.60 × 12,488,518.80
  4. Step 4: Simplify right side
    12,984,530.40x = 243,236,328,014,357.31
  5. Step 5: Solve for x
    x = 243,236,328,014,357.31/12,984,530.40
  6. Step 6: Final answer
    x = 18,732,778.20

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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.