Home / 39,645.85-54,712.85-21,741.50

Finding the Fourth Proportional to 39,645.85, 54,712.85 and 21,741.50

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Solution

The fourth proportional to 39,645.85, 54,712.85 and 21,741.50 is: 30,004.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,645.85 : 54,712.85 = 21,741.50 : x
  2. Step 2: Convert to fraction form
    39,645.85/54,712.85 = 21,741.50/x
  3. Step 3: Cross multiply
    39,645.85x = 54,712.85 × 21,741.50
  4. Step 4: Simplify right side
    39,645.85x = 1,189,539,154.71
  5. Step 5: Solve for x
    x = 1,189,539,154.71/39,645.85
  6. Step 6: Final answer
    x = 30,004.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.