Home / 13,288,718.90-19,932,041.55-5,200,123.70

Finding the Fourth Proportional to 13,288,718.90, 19,932,041.55 and 5,200,123.70

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Solution

The fourth proportional to 13,288,718.90, 19,932,041.55 and 5,200,123.70 is: 7,799,779.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,288,718.90 : 19,932,041.55 = 5,200,123.70 : x
  2. Step 2: Convert to fraction form
    13,288,718.90/19,932,041.55 = 5,200,123.70/x
  3. Step 3: Cross multiply
    13,288,718.90x = 19,932,041.55 × 5,200,123.70
  4. Step 4: Simplify right side
    13,288,718.90x = 103,649,081,653,539.75
  5. Step 5: Solve for x
    x = 103,649,081,653,539.75/13,288,718.90
  6. Step 6: Final answer
    x = 7,799,779.83

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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.