Home / 15,721.83-21,692.16-9,348.06

Finding the Fourth Proportional to 15,721.83, 21,692.16 and 9,348.06

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Solution

The fourth proportional to 15,721.83, 21,692.16 and 9,348.06 is: 12,897.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,721.83 : 21,692.16 = 9,348.06 : x
  2. Step 2: Convert to fraction form
    15,721.83/21,692.16 = 9,348.06/x
  3. Step 3: Cross multiply
    15,721.83x = 21,692.16 × 9,348.06
  4. Step 4: Simplify right side
    15,721.83x = 202,779,613.21
  5. Step 5: Solve for x
    x = 202,779,613.21/15,721.83
  6. Step 6: Final answer
    x = 12,897.97

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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.