Home / 39,862.99-55,010.27-21,959.67

Finding the Fourth Proportional to 39,862.99, 55,010.27 and 21,959.67

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Solution

The fourth proportional to 39,862.99, 55,010.27 and 21,959.67 is: 30,303.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,862.99 : 55,010.27 = 21,959.67 : x
  2. Step 2: Convert to fraction form
    39,862.99/55,010.27 = 21,959.67/x
  3. Step 3: Cross multiply
    39,862.99x = 55,010.27 × 21,959.67
  4. Step 4: Simplify right side
    39,862.99x = 1,208,007,375.81
  5. Step 5: Solve for x
    x = 1,208,007,375.81/39,862.99
  6. Step 6: Final answer
    x = 30,303.98

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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.