Home / 39,278.34-58,909.20-12,977.10

Finding the Fourth Proportional to 39,278.34, 58,909.20 and 12,977.10

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Solution

The fourth proportional to 39,278.34, 58,909.20 and 12,977.10 is: 19,462.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,278.34 : 58,909.20 = 12,977.10 : x
  2. Step 2: Convert to fraction form
    39,278.34/58,909.20 = 12,977.10/x
  3. Step 3: Cross multiply
    39,278.34x = 58,909.20 × 12,977.10
  4. Step 4: Simplify right side
    39,278.34x = 764,470,579.32
  5. Step 5: Solve for x
    x = 764,470,579.32/39,278.34
  6. Step 6: Final answer
    x = 19,462.90

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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.