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Finding the Fourth Proportional to 39,135, 58,690.18 and 12,833.63

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Solution

The fourth proportional to 39,135, 58,690.18 and 12,833.63 is: 19,246.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,135 : 58,690.18 = 12,833.63 : x
  2. Step 2: Convert to fraction form
    39,135/58,690.18 = 12,833.63/x
  3. Step 3: Cross multiply
    39,135x = 58,690.18 × 12,833.63
  4. Step 4: Simplify right side
    39,135x = 753,208,054.75
  5. Step 5: Solve for x
    x = 753,208,054.75/39,135
  6. Step 6: Final answer
    x = 19,246.40

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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.