Home / 13,319,826.16-18,379,390.20-7,811,123.08

Finding the Fourth Proportional to 13,319,826.16, 18,379,390.20 and 7,811,123.08

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Solution

The fourth proportional to 13,319,826.16, 18,379,390.20 and 7,811,123.08 is: 10,778,194.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319,826.16 : 18,379,390.20 = 7,811,123.08 : x
  2. Step 2: Convert to fraction form
    13,319,826.16/18,379,390.20 = 7,811,123.08/x
  3. Step 3: Cross multiply
    13,319,826.16x = 18,379,390.20 × 7,811,123.08
  4. Step 4: Simplify right side
    13,319,826.16x = 143,563,678,987,545.81
  5. Step 5: Solve for x
    x = 143,563,678,987,545.81/13,319,826.16
  6. Step 6: Final answer
    x = 10,778,194.64

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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.