Home / 13,479,877.90-20,219,816.85-8,378,044.30

Finding the Fourth Proportional to 13,479,877.90, 20,219,816.85 and 8,378,044.30

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Solution

The fourth proportional to 13,479,877.90, 20,219,816.85 and 8,378,044.30 is: 12,567,066.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479,877.90 : 20,219,816.85 = 8,378,044.30 : x
  2. Step 2: Convert to fraction form
    13,479,877.90/20,219,816.85 = 8,378,044.30/x
  3. Step 3: Cross multiply
    13,479,877.90x = 20,219,816.85 × 8,378,044.30
  4. Step 4: Simplify right side
    13,479,877.90x = 169,402,521,307,186.47
  5. Step 5: Solve for x
    x = 169,402,521,307,186.47/13,479,877.90
  6. Step 6: Final answer
    x = 12,567,066.45

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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.