Home / 30,728,024.33-42,355,423.97-20,801,776.71

Finding the Fourth Proportional to 30,728,024.33, 42,355,423.97 and 20,801,776.71

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Solution

The fourth proportional to 30,728,024.33, 42,355,423.97 and 20,801,776.71 is: 28,673,111.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,728,024.33 : 42,355,423.97 = 20,801,776.71 : x
  2. Step 2: Convert to fraction form
    30,728,024.33/42,355,423.97 = 20,801,776.71/x
  3. Step 3: Cross multiply
    30,728,024.33x = 42,355,423.97 × 20,801,776.71
  4. Step 4: Simplify right side
    30,728,024.33x = 881,068,071,775,860.75
  5. Step 5: Solve for x
    x = 881,068,071,775,860.75/30,728,024.33
  6. Step 6: Final answer
    x = 28,673,111.63

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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.