Home / 20,548,162.79-28,345,713.75-12,705,167.87

Finding the Fourth Proportional to 20,548,162.79, 28,345,713.75 and 12,705,167.87

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Solution

The fourth proportional to 20,548,162.79, 28,345,713.75 and 12,705,167.87 is: 17,526,484.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,548,162.79 : 28,345,713.75 = 12,705,167.87 : x
  2. Step 2: Convert to fraction form
    20,548,162.79/28,345,713.75 = 12,705,167.87/x
  3. Step 3: Cross multiply
    20,548,162.79x = 28,345,713.75 × 12,705,167.87
  4. Step 4: Simplify right side
    20,548,162.79x = 360,137,051,588,717.19
  5. Step 5: Solve for x
    x = 360,137,051,588,717.19/20,548,162.79
  6. Step 6: Final answer
    x = 17,526,484.25

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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.