Home / 19,123.80-28,668.68-7,434.28

Finding the Fourth Proportional to 19,123.80, 28,668.68 and 7,434.28

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Solution

The fourth proportional to 19,123.80, 28,668.68 and 7,434.28 is: 11,144.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,123.80 : 28,668.68 = 7,434.28 : x
  2. Step 2: Convert to fraction form
    19,123.80/28,668.68 = 7,434.28/x
  3. Step 3: Cross multiply
    19,123.80x = 28,668.68 × 7,434.28
  4. Step 4: Simplify right side
    19,123.80x = 213,130,994.35
  5. Step 5: Solve for x
    x = 213,130,994.35/19,123.80
  6. Step 6: Final answer
    x = 11,144.80

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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.