Home / 20,715,000.40-31,072,500.60-7,928,923.60

Finding the Fourth Proportional to 20,715,000.40, 31,072,500.60 and 7,928,923.60

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Solution

The fourth proportional to 20,715,000.40, 31,072,500.60 and 7,928,923.60 is: 11,893,385.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715,000.40 : 31,072,500.60 = 7,928,923.60 : x
  2. Step 2: Convert to fraction form
    20,715,000.40/31,072,500.60 = 7,928,923.60/x
  3. Step 3: Cross multiply
    20,715,000.40x = 31,072,500.60 × 7,928,923.60
  4. Step 4: Simplify right side
    20,715,000.40x = 246,371,483,318,354.16
  5. Step 5: Solve for x
    x = 246,371,483,318,354.16/20,715,000.40
  6. Step 6: Final answer
    x = 11,893,385.40

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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.