Home / 20,392,289.10-28,142,101.45-11,099,409.98

Finding the Fourth Proportional to 20,392,289.10, 28,142,101.45 and 11,099,409.98

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Solution

The fourth proportional to 20,392,289.10, 28,142,101.45 and 11,099,409.98 is: 15,317,589.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,392,289.10 : 28,142,101.45 = 11,099,409.98 : x
  2. Step 2: Convert to fraction form
    20,392,289.10/28,142,101.45 = 11,099,409.98/x
  3. Step 3: Cross multiply
    20,392,289.10x = 28,142,101.45 × 11,099,409.98
  4. Step 4: Simplify right side
    20,392,289.10x = 312,360,721,692,302.50
  5. Step 5: Solve for x
    x = 312,360,721,692,302.50/20,392,289.10
  6. Step 6: Final answer
    x = 15,317,589.91

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1.5x scale

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.