Home / 20,303.31-28,018.43-11,350.77

Finding the Fourth Proportional to 20,303.31, 28,018.43 and 11,350.77

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Solution

The fourth proportional to 20,303.31, 28,018.43 and 11,350.77 is: 15,663.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,303.31 : 28,018.43 = 11,350.77 : x
  2. Step 2: Convert to fraction form
    20,303.31/28,018.43 = 11,350.77/x
  3. Step 3: Cross multiply
    20,303.31x = 28,018.43 × 11,350.77
  4. Step 4: Simplify right side
    20,303.31x = 318,030,754.69
  5. Step 5: Solve for x
    x = 318,030,754.69/20,303.31
  6. Step 6: Final answer
    x = 15,663.99

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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.