Home / 30,443.11-45,664.67-19,979.33

Finding the Fourth Proportional to 30,443.11, 45,664.67 and 19,979.33

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Solution

The fourth proportional to 30,443.11, 45,664.67 and 19,979.33 is: 29,968.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,443.11 : 45,664.67 = 19,979.33 : x
  2. Step 2: Convert to fraction form
    30,443.11/45,664.67 = 19,979.33/x
  3. Step 3: Cross multiply
    30,443.11x = 45,664.67 × 19,979.33
  4. Step 4: Simplify right side
    30,443.11x = 912,349,332.90
  5. Step 5: Solve for x
    x = 912,349,332.90/30,443.11
  6. Step 6: Final answer
    x = 29,968.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.