Home / 39,718.32-54,812.19-21,814.50

Finding the Fourth Proportional to 39,718.32, 54,812.19 and 21,814.50

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Solution

The fourth proportional to 39,718.32, 54,812.19 and 21,814.50 is: 30,104.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,718.32 : 54,812.19 = 21,814.50 : x
  2. Step 2: Convert to fraction form
    39,718.32/54,812.19 = 21,814.50/x
  3. Step 3: Cross multiply
    39,718.32x = 54,812.19 × 21,814.50
  4. Step 4: Simplify right side
    39,718.32x = 1,195,700,518.76
  5. Step 5: Solve for x
    x = 1,195,700,518.76/39,718.32
  6. Step 6: Final answer
    x = 30,104.51

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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.