Home / 15,014,758.40-20,720,394.24-8,139,219.20

Finding the Fourth Proportional to 15,014,758.40, 20,720,394.24 and 8,139,219.20

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Solution

The fourth proportional to 15,014,758.40, 20,720,394.24 and 8,139,219.20 is: 11,232,137.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014,758.40 : 20,720,394.24 = 8,139,219.20 : x
  2. Step 2: Convert to fraction form
    15,014,758.40/20,720,394.24 = 8,139,219.20/x
  3. Step 3: Cross multiply
    15,014,758.40x = 20,720,394.24 × 8,139,219.20
  4. Step 4: Simplify right side
    15,014,758.40x = 168,647,830,629,777.41
  5. Step 5: Solve for x
    x = 168,647,830,629,777.41/15,014,758.40
  6. Step 6: Final answer
    x = 11,232,137.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.