Home / 30,718,474.10-42,391,638.78-16,780,022.54

Finding the Fourth Proportional to 30,718,474.10, 42,391,638.78 and 16,780,022.54

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Solution

The fourth proportional to 30,718,474.10, 42,391,638.78 and 16,780,022.54 is: 23,156,510.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,718,474.10 : 42,391,638.78 = 16,780,022.54 : x
  2. Step 2: Convert to fraction form
    30,718,474.10/42,391,638.78 = 16,780,022.54/x
  3. Step 3: Cross multiply
    30,718,474.10x = 42,391,638.78 × 16,780,022.54
  4. Step 4: Simplify right side
    30,718,474.10x = 711,332,654,235,938.12
  5. Step 5: Solve for x
    x = 711,332,654,235,938.12/30,718,474.10
  6. Step 6: Final answer
    x = 23,156,510.05

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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.