Home / 30,010.76-45,011.42-18,883.39

Finding the Fourth Proportional to 30,010.76, 45,011.42 and 18,883.39

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Solution

The fourth proportional to 30,010.76, 45,011.42 and 18,883.39 is: 28,322.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,010.76 : 45,011.42 = 18,883.39 : x
  2. Step 2: Convert to fraction form
    30,010.76/45,011.42 = 18,883.39/x
  3. Step 3: Cross multiply
    30,010.76x = 45,011.42 × 18,883.39
  4. Step 4: Simplify right side
    30,010.76x = 849,967,991.37
  5. Step 5: Solve for x
    x = 849,967,991.37/30,010.76
  6. Step 6: Final answer
    x = 28,322.11

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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.