Home / 21,855,134.20-30,164,033.10-13,035,150.76

Finding the Fourth Proportional to 21,855,134.20, 30,164,033.10 and 13,035,150.76

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Solution

The fourth proportional to 21,855,134.20, 30,164,033.10 and 13,035,150.76 is: 17,990,862.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,855,134.20 : 30,164,033.10 = 13,035,150.76 : x
  2. Step 2: Convert to fraction form
    21,855,134.20/30,164,033.10 = 13,035,150.76/x
  3. Step 3: Cross multiply
    21,855,134.20x = 30,164,033.10 × 13,035,150.76
  4. Step 4: Simplify right side
    21,855,134.20x = 393,192,718,988,130.19
  5. Step 5: Solve for x
    x = 393,192,718,988,130.19/21,855,134.20
  6. Step 6: Final answer
    x = 17,990,862.71

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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.