Home / 13,218.49-19,826.29-5,427.33

Finding the Fourth Proportional to 13,218.49, 19,826.29 and 5,427.33

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Solution

The fourth proportional to 13,218.49, 19,826.29 and 5,427.33 is: 8,140.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,218.49 : 19,826.29 = 5,427.33 : x
  2. Step 2: Convert to fraction form
    13,218.49/19,826.29 = 5,427.33/x
  3. Step 3: Cross multiply
    13,218.49x = 19,826.29 × 5,427.33
  4. Step 4: Simplify right side
    13,218.49x = 107,603,818.51
  5. Step 5: Solve for x
    x = 107,603,818.51/13,218.49
  6. Step 6: Final answer
    x = 8,140.40

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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.