Home / 38,917.61-58,384.61-12,620.30

Finding the Fourth Proportional to 38,917.61, 58,384.61 and 12,620.30

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Solution

The fourth proportional to 38,917.61, 58,384.61 and 12,620.30 is: 18,933.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,917.61 : 58,384.61 = 12,620.30 : x
  2. Step 2: Convert to fraction form
    38,917.61/58,384.61 = 12,620.30/x
  3. Step 3: Cross multiply
    38,917.61x = 58,384.61 × 12,620.30
  4. Step 4: Simplify right side
    38,917.61x = 736,831,033.21
  5. Step 5: Solve for x
    x = 736,831,033.21/38,917.61
  6. Step 6: Final answer
    x = 18,933.10

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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.