Home / 10,890,015.40-16,335,023.10-9,189,404.20

Finding the Fourth Proportional to 10,890,015.40, 16,335,023.10 and 9,189,404.20

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Solution

The fourth proportional to 10,890,015.40, 16,335,023.10 and 9,189,404.20 is: 13,784,106.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890,015.40 : 16,335,023.10 = 9,189,404.20 : x
  2. Step 2: Convert to fraction form
    10,890,015.40/16,335,023.10 = 9,189,404.20/x
  3. Step 3: Cross multiply
    10,890,015.40x = 16,335,023.10 × 9,189,404.20
  4. Step 4: Simplify right side
    10,890,015.40x = 150,109,129,882,237
  5. Step 5: Solve for x
    x = 150,109,129,882,237/10,890,015.40
  6. Step 6: Final answer
    x = 13,784,106.30

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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.