Home / 13,686,763.68-18,891,940.50-7,889,421.96

Finding the Fourth Proportional to 13,686,763.68, 18,891,940.50 and 7,889,421.96

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Solution

The fourth proportional to 13,686,763.68, 18,891,940.50 and 7,889,421.96 is: 10,889,827.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,686,763.68 : 18,891,940.50 = 7,889,421.96 : x
  2. Step 2: Convert to fraction form
    13,686,763.68/18,891,940.50 = 7,889,421.96/x
  3. Step 3: Cross multiply
    13,686,763.68x = 18,891,940.50 × 7,889,421.96
  4. Step 4: Simplify right side
    13,686,763.68x = 149,046,490,247,713.38
  5. Step 5: Solve for x
    x = 149,046,490,247,713.38/13,686,763.68
  6. Step 6: Final answer
    x = 10,889,827.12

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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.