Home / 20,957,065.20-31,435,597.80-8,840,210.40

Finding the Fourth Proportional to 20,957,065.20, 31,435,597.80 and 8,840,210.40

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Solution

The fourth proportional to 20,957,065.20, 31,435,597.80 and 8,840,210.40 is: 13,260,315.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,957,065.20 : 31,435,597.80 = 8,840,210.40 : x
  2. Step 2: Convert to fraction form
    20,957,065.20/31,435,597.80 = 8,840,210.40/x
  3. Step 3: Cross multiply
    20,957,065.20x = 31,435,597.80 × 8,840,210.40
  4. Step 4: Simplify right side
    20,957,065.20x = 277,897,298,601,777.12
  5. Step 5: Solve for x
    x = 277,897,298,601,777.12/20,957,065.20
  6. Step 6: Final answer
    x = 13,260,315.60

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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.