Home / 20,206,770.21-30,329,317.80-12,507,124.29

Finding the Fourth Proportional to 20,206,770.21, 30,329,317.80 and 12,507,124.29

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Solution

The fourth proportional to 20,206,770.21, 30,329,317.80 and 12,507,124.29 is: 18,772,547.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,206,770.21 : 30,329,317.80 = 12,507,124.29 : x
  2. Step 2: Convert to fraction form
    20,206,770.21/30,329,317.80 = 12,507,124.29/x
  3. Step 3: Cross multiply
    20,206,770.21x = 30,329,317.80 × 12,507,124.29
  4. Step 4: Simplify right side
    20,206,770.21x = 379,332,547,355,509.38
  5. Step 5: Solve for x
    x = 379,332,547,355,509.38/20,206,770.21
  6. Step 6: Final answer
    x = 18,772,547.19

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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.