Home / 13,872,878.40-20,801,023.20-7,154,414.40

Finding the Fourth Proportional to 13,872,878.40, 20,801,023.20 and 7,154,414.40

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Solution

The fourth proportional to 13,872,878.40, 20,801,023.20 and 7,154,414.40 is: 10,727,344.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872,878.40 : 20,801,023.20 = 7,154,414.40 : x
  2. Step 2: Convert to fraction form
    13,872,878.40/20,801,023.20 = 7,154,414.40/x
  3. Step 3: Cross multiply
    13,872,878.40x = 20,801,023.20 × 7,154,414.40
  4. Step 4: Simplify right side
    13,872,878.40x = 148,819,139,916,814.09
  5. Step 5: Solve for x
    x = 148,819,139,916,814.09/13,872,878.40
  6. Step 6: Final answer
    x = 10,727,344.08

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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.