Home / 20,693,674.40-28,555,904.40-12,428,825.72

Finding the Fourth Proportional to 20,693,674.40, 28,555,904.40 and 12,428,825.72

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Solution

The fourth proportional to 20,693,674.40, 28,555,904.40 and 12,428,825.72 is: 17,150,958.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,693,674.40 : 28,555,904.40 = 12,428,825.72 : x
  2. Step 2: Convert to fraction form
    20,693,674.40/28,555,904.40 = 12,428,825.72/x
  3. Step 3: Cross multiply
    20,693,674.40x = 28,555,904.40 × 12,428,825.72
  4. Step 4: Simplify right side
    20,693,674.40x = 354,916,359,064,581.19
  5. Step 5: Solve for x
    x = 354,916,359,064,581.19/20,693,674.40
  6. Step 6: Final answer
    x = 17,150,958.90

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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.