Home / 39,478.79-59,215.75-13,181.33

Finding the Fourth Proportional to 39,478.79, 59,215.75 and 13,181.33

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Solution

The fourth proportional to 39,478.79, 59,215.75 and 13,181.33 is: 19,771.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,478.79 : 59,215.75 = 13,181.33 : x
  2. Step 2: Convert to fraction form
    39,478.79/59,215.75 = 13,181.33/x
  3. Step 3: Cross multiply
    39,478.79x = 59,215.75 × 13,181.33
  4. Step 4: Simplify right side
    39,478.79x = 780,542,341.95
  5. Step 5: Solve for x
    x = 780,542,341.95/39,478.79
  6. Step 6: Final answer
    x = 19,771.18

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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.