Home / 39,285.72-58,890.08-12,972.88

Finding the Fourth Proportional to 39,285.72, 58,890.08 and 12,972.88

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Solution

The fourth proportional to 39,285.72, 58,890.08 and 12,972.88 is: 19,446.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,285.72 : 58,890.08 = 12,972.88 : x
  2. Step 2: Convert to fraction form
    39,285.72/58,890.08 = 12,972.88/x
  3. Step 3: Cross multiply
    39,285.72x = 58,890.08 × 12,972.88
  4. Step 4: Simplify right side
    39,285.72x = 763,973,941.03
  5. Step 5: Solve for x
    x = 763,973,941.03/39,285.72
  6. Step 6: Final answer
    x = 19,446.61

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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.