Home / 20,190,718.80-30,286,078.20-9,404,434.80

Finding the Fourth Proportional to 20,190,718.80, 30,286,078.20 and 9,404,434.80

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Solution

The fourth proportional to 20,190,718.80, 30,286,078.20 and 9,404,434.80 is: 14,106,652.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190,718.80 : 30,286,078.20 = 9,404,434.80 : x
  2. Step 2: Convert to fraction form
    20,190,718.80/30,286,078.20 = 9,404,434.80/x
  3. Step 3: Cross multiply
    20,190,718.80x = 30,286,078.20 × 9,404,434.80
  4. Step 4: Simplify right side
    20,190,718.80x = 284,823,447,779,601.38
  5. Step 5: Solve for x
    x = 284,823,447,779,601.38/20,190,718.80
  6. Step 6: Final answer
    x = 14,106,652.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.