Home / 18,403,479.72-25,397,911.80-10,143,530.64

Finding the Fourth Proportional to 18,403,479.72, 25,397,911.80 and 10,143,530.64

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Solution

The fourth proportional to 18,403,479.72, 25,397,911.80 and 10,143,530.64 is: 13,998,683.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,403,479.72 : 25,397,911.80 = 10,143,530.64 : x
  2. Step 2: Convert to fraction form
    18,403,479.72/25,397,911.80 = 10,143,530.64/x
  3. Step 3: Cross multiply
    18,403,479.72x = 25,397,911.80 × 10,143,530.64
  4. Step 4: Simplify right side
    18,403,479.72x = 257,624,496,535,317.56
  5. Step 5: Solve for x
    x = 257,624,496,535,317.56/18,403,479.72
  6. Step 6: Final answer
    x = 13,998,683.97

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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.