Home / 21,518.06-29,692.16-12,559.08

Finding the Fourth Proportional to 21,518.06, 29,692.16 and 12,559.08

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Solution

The fourth proportional to 21,518.06, 29,692.16 and 12,559.08 is: 17,329.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,518.06 : 29,692.16 = 12,559.08 : x
  2. Step 2: Convert to fraction form
    21,518.06/29,692.16 = 12,559.08/x
  3. Step 3: Cross multiply
    21,518.06x = 29,692.16 × 12,559.08
  4. Step 4: Simplify right side
    21,518.06x = 372,906,212.81
  5. Step 5: Solve for x
    x = 372,906,212.81/21,518.06
  6. Step 6: Final answer
    x = 17,329.92

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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.