Home / 39,378.15-54,340.86-21,473.50

Finding the Fourth Proportional to 39,378.15, 54,340.86 and 21,473.50

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Solution

The fourth proportional to 39,378.15, 54,340.86 and 21,473.50 is: 29,632.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,378.15 : 54,340.86 = 21,473.50 : x
  2. Step 2: Convert to fraction form
    39,378.15/54,340.86 = 21,473.50/x
  3. Step 3: Cross multiply
    39,378.15x = 54,340.86 × 21,473.50
  4. Step 4: Simplify right side
    39,378.15x = 1,166,888,457.21
  5. Step 5: Solve for x
    x = 1,166,888,457.21/39,378.15
  6. Step 6: Final answer
    x = 29,632.89

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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.