Home / 20,950.04-31,429.44-18,858.80

Finding the Fourth Proportional to 20,950.04, 31,429.44 and 18,858.80

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Solution

The fourth proportional to 20,950.04, 31,429.44 and 18,858.80 is: 28,292.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,950.04 : 31,429.44 = 18,858.80 : x
  2. Step 2: Convert to fraction form
    20,950.04/31,429.44 = 18,858.80/x
  3. Step 3: Cross multiply
    20,950.04x = 31,429.44 × 18,858.80
  4. Step 4: Simplify right side
    20,950.04x = 592,721,523.07
  5. Step 5: Solve for x
    x = 592,721,523.07/20,950.04
  6. Step 6: Final answer
    x = 28,292.14

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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.