Home / 30,320.84-41,860.12-20,266.31

Finding the Fourth Proportional to 30,320.84, 41,860.12 and 20,266.31

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Solution

The fourth proportional to 30,320.84, 41,860.12 and 20,266.31 is: 27,979.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,320.84 : 41,860.12 = 20,266.31 : x
  2. Step 2: Convert to fraction form
    30,320.84/41,860.12 = 20,266.31/x
  3. Step 3: Cross multiply
    30,320.84x = 41,860.12 × 20,266.31
  4. Step 4: Simplify right side
    30,320.84x = 848,349,908.59
  5. Step 5: Solve for x
    x = 848,349,908.59/30,320.84
  6. Step 6: Final answer
    x = 27,979.11

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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.