Home / 12,249,989.78-16,905,200.90-6,668,396.79

Finding the Fourth Proportional to 12,249,989.78, 16,905,200.90 and 6,668,396.79

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Solution

The fourth proportional to 12,249,989.78, 16,905,200.90 and 6,668,396.79 is: 9,202,504.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,249,989.78 : 16,905,200.90 = 6,668,396.79 : x
  2. Step 2: Convert to fraction form
    12,249,989.78/16,905,200.90 = 6,668,396.79/x
  3. Step 3: Cross multiply
    12,249,989.78x = 16,905,200.90 × 6,668,396.79
  4. Step 4: Simplify right side
    12,249,989.78x = 112,730,587,432,536.11
  5. Step 5: Solve for x
    x = 112,730,587,432,536.11/12,249,989.78
  6. Step 6: Final answer
    x = 9,202,504.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.