Home / 20,303.13-28,018.52-11,351.12

Finding the Fourth Proportional to 20,303.13, 28,018.52 and 11,351.12

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Solution

The fourth proportional to 20,303.13, 28,018.52 and 11,351.12 is: 15,664.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,303.13 : 28,018.52 = 11,351.12 : x
  2. Step 2: Convert to fraction form
    20,303.13/28,018.52 = 11,351.12/x
  3. Step 3: Cross multiply
    20,303.13x = 28,018.52 × 11,351.12
  4. Step 4: Simplify right side
    20,303.13x = 318,041,638.60
  5. Step 5: Solve for x
    x = 318,041,638.60/20,303.13
  6. Step 6: Final answer
    x = 15,664.66

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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.