Home / 15,692.08-21,654.80-8,618.32

Finding the Fourth Proportional to 15,692.08, 21,654.80 and 8,618.32

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Solution

The fourth proportional to 15,692.08, 21,654.80 and 8,618.32 is: 11,893.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,692.08 : 21,654.80 = 8,618.32 : x
  2. Step 2: Convert to fraction form
    15,692.08/21,654.80 = 8,618.32/x
  3. Step 3: Cross multiply
    15,692.08x = 21,654.80 × 8,618.32
  4. Step 4: Simplify right side
    15,692.08x = 186,627,995.94
  5. Step 5: Solve for x
    x = 186,627,995.94/15,692.08
  6. Step 6: Final answer
    x = 11,893.13

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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.