Home / 28,218,889.84-38,950,355.64-18,430,830.40

Finding the Fourth Proportional to 28,218,889.84, 38,950,355.64 and 18,430,830.40

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Solution

The fourth proportional to 28,218,889.84, 38,950,355.64 and 18,430,830.40 is: 25,439,958.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,218,889.84 : 38,950,355.64 = 18,430,830.40 : x
  2. Step 2: Convert to fraction form
    28,218,889.84/38,950,355.64 = 18,430,830.40/x
  3. Step 3: Cross multiply
    28,218,889.84x = 38,950,355.64 × 18,430,830.40
  4. Step 4: Simplify right side
    28,218,889.84x = 717,887,398,820,523.38
  5. Step 5: Solve for x
    x = 717,887,398,820,523.38/28,218,889.84
  6. Step 6: Final answer
    x = 25,439,958.94

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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.