Home / 30,370.24-41,895.12-20,287.36

Finding the Fourth Proportional to 30,370.24, 41,895.12 and 20,287.36

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Solution

The fourth proportional to 30,370.24, 41,895.12 and 20,287.36 is: 27,985.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,370.24 : 41,895.12 = 20,287.36 : x
  2. Step 2: Convert to fraction form
    30,370.24/41,895.12 = 20,287.36/x
  3. Step 3: Cross multiply
    30,370.24x = 41,895.12 × 20,287.36
  4. Step 4: Simplify right side
    30,370.24x = 849,941,381.68
  5. Step 5: Solve for x
    x = 849,941,381.68/30,370.24
  6. Step 6: Final answer
    x = 27,985.99

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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.