Home / 39,888.11-55,045.93-21,983.16

Finding the Fourth Proportional to 39,888.11, 55,045.93 and 21,983.16

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Solution

The fourth proportional to 39,888.11, 55,045.93 and 21,983.16 is: 30,336.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,888.11 : 55,045.93 = 21,983.16 : x
  2. Step 2: Convert to fraction form
    39,888.11/55,045.93 = 21,983.16/x
  3. Step 3: Cross multiply
    39,888.11x = 55,045.93 × 21,983.16
  4. Step 4: Simplify right side
    39,888.11x = 1,210,083,679.22
  5. Step 5: Solve for x
    x = 1,210,083,679.22/39,888.11
  6. Step 6: Final answer
    x = 30,336.95

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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.