Home / 19,803.95-27,319.24-13,428.39

Finding the Fourth Proportional to 19,803.95, 27,319.24 and 13,428.39

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Solution

The fourth proportional to 19,803.95, 27,319.24 and 13,428.39 is: 18,524.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,803.95 : 27,319.24 = 13,428.39 : x
  2. Step 2: Convert to fraction form
    19,803.95/27,319.24 = 13,428.39/x
  3. Step 3: Cross multiply
    19,803.95x = 27,319.24 × 13,428.39
  4. Step 4: Simplify right side
    19,803.95x = 366,853,409.22
  5. Step 5: Solve for x
    x = 366,853,409.22/19,803.95
  6. Step 6: Final answer
    x = 18,524.25

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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.