Home / 39,888.27-55,045.80-21,983.22

Finding the Fourth Proportional to 39,888.27, 55,045.80 and 21,983.22

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Solution

The fourth proportional to 39,888.27, 55,045.80 and 21,983.22 is: 30,336.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,888.27 : 55,045.80 = 21,983.22 : x
  2. Step 2: Convert to fraction form
    39,888.27/55,045.80 = 21,983.22/x
  3. Step 3: Cross multiply
    39,888.27x = 55,045.80 × 21,983.22
  4. Step 4: Simplify right side
    39,888.27x = 1,210,083,931.48
  5. Step 5: Solve for x
    x = 1,210,083,931.48/39,888.27
  6. Step 6: Final answer
    x = 30,336.84

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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.