Home / 39,894.35-55,053.23-21,988.96

Finding the Fourth Proportional to 39,894.35, 55,053.23 and 21,988.96

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Solution

The fourth proportional to 39,894.35, 55,053.23 and 21,988.96 is: 30,344.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,894.35 : 55,053.23 = 21,988.96 : x
  2. Step 2: Convert to fraction form
    39,894.35/55,053.23 = 21,988.96/x
  3. Step 3: Cross multiply
    39,894.35x = 55,053.23 × 21,988.96
  4. Step 4: Simplify right side
    39,894.35x = 1,210,563,162.40
  5. Step 5: Solve for x
    x = 1,210,563,162.40/39,894.35
  6. Step 6: Final answer
    x = 30,344.23

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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.