Home / 13,479,890.30-20,219,835.45-8,378,056.70

Finding the Fourth Proportional to 13,479,890.30, 20,219,835.45 and 8,378,056.70

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Solution

The fourth proportional to 13,479,890.30, 20,219,835.45 and 8,378,056.70 is: 12,567,085.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479,890.30 : 20,219,835.45 = 8,378,056.70 : x
  2. Step 2: Convert to fraction form
    13,479,890.30/20,219,835.45 = 8,378,056.70/x
  3. Step 3: Cross multiply
    13,479,890.30x = 20,219,835.45 × 8,378,056.70
  4. Step 4: Simplify right side
    13,479,890.30x = 169,402,927,864,770
  5. Step 5: Solve for x
    x = 169,402,927,864,770/13,479,890.30
  6. Step 6: Final answer
    x = 12,567,085.05

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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.