Home / 39,894.18-55,051.83-21,985.62

Finding the Fourth Proportional to 39,894.18, 55,051.83 and 21,985.62

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Solution

The fourth proportional to 39,894.18, 55,051.83 and 21,985.62 is: 30,338.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,894.18 : 55,051.83 = 21,985.62 : x
  2. Step 2: Convert to fraction form
    39,894.18/55,051.83 = 21,985.62/x
  3. Step 3: Cross multiply
    39,894.18x = 55,051.83 × 21,985.62
  4. Step 4: Simplify right side
    39,894.18x = 1,210,348,614.68
  5. Step 5: Solve for x
    x = 1,210,348,614.68/39,894.18
  6. Step 6: Final answer
    x = 30,338.98

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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.