Home / 20,158,865.20-30,238,297.80-13,356,420.40

Finding the Fourth Proportional to 20,158,865.20, 30,238,297.80 and 13,356,420.40

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Solution

The fourth proportional to 20,158,865.20, 30,238,297.80 and 13,356,420.40 is: 20,034,630.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158,865.20 : 30,238,297.80 = 13,356,420.40 : x
  2. Step 2: Convert to fraction form
    20,158,865.20/30,238,297.80 = 13,356,420.40/x
  3. Step 3: Cross multiply
    20,158,865.20x = 30,238,297.80 × 13,356,420.40
  4. Step 4: Simplify right side
    20,158,865.20x = 403,875,417,597,195.12
  5. Step 5: Solve for x
    x = 403,875,417,597,195.12/20,158,865.20
  6. Step 6: Final answer
    x = 20,034,630.60

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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.