Home / 39,859.63-55,006.67-21,955.18

Finding the Fourth Proportional to 39,859.63, 55,006.67 and 21,955.18

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Solution

The fourth proportional to 39,859.63, 55,006.67 and 21,955.18 is: 30,298.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,859.63 : 55,006.67 = 21,955.18 : x
  2. Step 2: Convert to fraction form
    39,859.63/55,006.67 = 21,955.18/x
  3. Step 3: Cross multiply
    39,859.63x = 55,006.67 × 21,955.18
  4. Step 4: Simplify right side
    39,859.63x = 1,207,681,341.05
  5. Step 5: Solve for x
    x = 1,207,681,341.05/39,859.63
  6. Step 6: Final answer
    x = 30,298.36

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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.