Home / 28,378,729,021.95-39,144,193,096.53-18,201,336,545.13

Finding the Fourth Proportional to 28,378,729,021.95, 39,144,193,096.53 and 18,201,336,545.13

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Solution

The fourth proportional to 28,378,729,021.95, 39,144,193,096.53 and 18,201,336,545.13 is: 25,106,009,215.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,378,729,021.95 : 39,144,193,096.53 = 18,201,336,545.13 : x
  2. Step 2: Convert to fraction form
    28,378,729,021.95/39,144,193,096.53 = 18,201,336,545.13/x
  3. Step 3: Cross multiply
    28,378,729,021.95x = 39,144,193,096.53 × 18,201,336,545.13
  4. Step 4: Simplify right side
    28,378,729,021.95x = 712,476,632,337,496,932,352
  5. Step 5: Solve for x
    x = 712,476,632,337,496,932,352/28,378,729,021.95
  6. Step 6: Final answer
    x = 25,106,009,215.09

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1.5x scale

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.