Home / 20,226,719.21-27,920,463.20-13,257,845.86

Finding the Fourth Proportional to 20,226,719.21, 27,920,463.20 and 13,257,845.86

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Solution

The fourth proportional to 20,226,719.21, 27,920,463.20 and 13,257,845.86 is: 18,300,802.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,226,719.21 : 27,920,463.20 = 13,257,845.86 : x
  2. Step 2: Convert to fraction form
    20,226,719.21/27,920,463.20 = 13,257,845.86/x
  3. Step 3: Cross multiply
    20,226,719.21x = 27,920,463.20 × 13,257,845.86
  4. Step 4: Simplify right side
    20,226,719.21x = 370,165,197,371,889.75
  5. Step 5: Solve for x
    x = 370,165,197,371,889.75/20,226,719.21
  6. Step 6: Final answer
    x = 18,300,802.69

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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.