Home / 15,864.42-21,891.95-8,692.91

Finding the Fourth Proportional to 15,864.42, 21,891.95 and 8,692.91

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Solution

The fourth proportional to 15,864.42, 21,891.95 and 8,692.91 is: 11,995.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,864.42 : 21,891.95 = 8,692.91 : x
  2. Step 2: Convert to fraction form
    15,864.42/21,891.95 = 8,692.91/x
  3. Step 3: Cross multiply
    15,864.42x = 21,891.95 × 8,692.91
  4. Step 4: Simplify right side
    15,864.42x = 190,304,598.15
  5. Step 5: Solve for x
    x = 190,304,598.15/15,864.42
  6. Step 6: Final answer
    x = 11,995.69

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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.