Home / 19,390.20-29,085.30-18,007.80

Finding the Fourth Proportional to 19,390.20, 29,085.30 and 18,007.80

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Solution

The fourth proportional to 19,390.20, 29,085.30 and 18,007.80 is: 27,011.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,390.20 : 29,085.30 = 18,007.80 : x
  2. Step 2: Convert to fraction form
    19,390.20/29,085.30 = 18,007.80/x
  3. Step 3: Cross multiply
    19,390.20x = 29,085.30 × 18,007.80
  4. Step 4: Simplify right side
    19,390.20x = 523,762,265.34
  5. Step 5: Solve for x
    x = 523,762,265.34/19,390.20
  6. Step 6: Final answer
    x = 27,011.70

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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.