Home / 18,139.47-27,155.75-17,692.35

Finding the Fourth Proportional to 18,139.47, 27,155.75 and 17,692.35

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Solution

The fourth proportional to 18,139.47, 27,155.75 and 17,692.35 is: 26,486.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.47 : 27,155.75 = 17,692.35 : x
  2. Step 2: Convert to fraction form
    18,139.47/27,155.75 = 17,692.35/x
  3. Step 3: Cross multiply
    18,139.47x = 27,155.75 × 17,692.35
  4. Step 4: Simplify right side
    18,139.47x = 480,448,945.05
  5. Step 5: Solve for x
    x = 480,448,945.05/18,139.47
  6. Step 6: Final answer
    x = 26,486.38

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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.