Home / 39,117.12-58,683.60-12,819.12

Finding the Fourth Proportional to 39,117.12, 58,683.60 and 12,819.12

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Solution

The fourth proportional to 39,117.12, 58,683.60 and 12,819.12 is: 19,231.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,117.12 : 58,683.60 = 12,819.12 : x
  2. Step 2: Convert to fraction form
    39,117.12/58,683.60 = 12,819.12/x
  3. Step 3: Cross multiply
    39,117.12x = 58,683.60 × 12,819.12
  4. Step 4: Simplify right side
    39,117.12x = 752,272,110.43
  5. Step 5: Solve for x
    x = 752,272,110.43/39,117.12
  6. Step 6: Final answer
    x = 19,231.28

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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.