Home / 39,135.12-58,707.60-12,842.64

Finding the Fourth Proportional to 39,135.12, 58,707.60 and 12,842.64

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Solution

The fourth proportional to 39,135.12, 58,707.60 and 12,842.64 is: 19,265.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,135.12 : 58,707.60 = 12,842.64 : x
  2. Step 2: Convert to fraction form
    39,135.12/58,707.60 = 12,842.64/x
  3. Step 3: Cross multiply
    39,135.12x = 58,707.60 × 12,842.64
  4. Step 4: Simplify right side
    39,135.12x = 753,960,572.06
  5. Step 5: Solve for x
    x = 753,960,572.06/39,135.12
  6. Step 6: Final answer
    x = 19,265.57

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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.