Home / 39,888.10-55,045.94-21,983.74

Finding the Fourth Proportional to 39,888.10, 55,045.94 and 21,983.74

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Solution

The fourth proportional to 39,888.10, 55,045.94 and 21,983.74 is: 30,337.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,888.10 : 55,045.94 = 21,983.74 : x
  2. Step 2: Convert to fraction form
    39,888.10/55,045.94 = 21,983.74/x
  3. Step 3: Cross multiply
    39,888.10x = 55,045.94 × 21,983.74
  4. Step 4: Simplify right side
    39,888.10x = 1,210,115,633.02
  5. Step 5: Solve for x
    x = 1,210,115,633.02/39,888.10
  6. Step 6: Final answer
    x = 30,337.76

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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.