Home / 18,669,417.60-28,003,847.22-11,385,017.40

Finding the Fourth Proportional to 18,669,417.60, 28,003,847.22 and 11,385,017.40

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Solution

The fourth proportional to 18,669,417.60, 28,003,847.22 and 11,385,017.40 is: 17,077,355.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,669,417.60 : 28,003,847.22 = 11,385,017.40 : x
  2. Step 2: Convert to fraction form
    18,669,417.60/28,003,847.22 = 11,385,017.40/x
  3. Step 3: Cross multiply
    18,669,417.60x = 28,003,847.22 × 11,385,017.40
  4. Step 4: Simplify right side
    18,669,417.60x = 318,824,287,866,641.62
  5. Step 5: Solve for x
    x = 318,824,287,866,641.62/18,669,417.60
  6. Step 6: Final answer
    x = 17,077,355.85

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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.