Home / 20,781,700.20-31,172,550.30-19,931,394.60

Finding the Fourth Proportional to 20,781,700.20, 31,172,550.30 and 19,931,394.60

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Solution

The fourth proportional to 20,781,700.20, 31,172,550.30 and 19,931,394.60 is: 29,897,091.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781,700.20 : 31,172,550.30 = 19,931,394.60 : x
  2. Step 2: Convert to fraction form
    20,781,700.20/31,172,550.30 = 19,931,394.60/x
  3. Step 3: Cross multiply
    20,781,700.20x = 31,172,550.30 × 19,931,394.60
  4. Step 4: Simplify right side
    20,781,700.20x = 621,312,400,717,648.50
  5. Step 5: Solve for x
    x = 621,312,400,717,648.50/20,781,700.20
  6. Step 6: Final answer
    x = 29,897,091.90

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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.