Home / 20,986,740.80-31,480,111.20-7,524,929.60

Finding the Fourth Proportional to 20,986,740.80, 31,480,111.20 and 7,524,929.60

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Solution

The fourth proportional to 20,986,740.80, 31,480,111.20 and 7,524,929.60 is: 11,287,394.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986,740.80 : 31,480,111.20 = 7,524,929.60 : x
  2. Step 2: Convert to fraction form
    20,986,740.80/31,480,111.20 = 7,524,929.60/x
  3. Step 3: Cross multiply
    20,986,740.80x = 31,480,111.20 × 7,524,929.60
  4. Step 4: Simplify right side
    20,986,740.80x = 236,885,620,580,171.50
  5. Step 5: Solve for x
    x = 236,885,620,580,171.50/20,986,740.80
  6. Step 6: Final answer
    x = 11,287,394.40

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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.