Home / 15,717.72-21,692.04-9,005.52

Finding the Fourth Proportional to 15,717.72, 21,692.04 and 9,005.52

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Solution

The fourth proportional to 15,717.72, 21,692.04 and 9,005.52 is: 12,428.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,717.72 : 21,692.04 = 9,005.52 : x
  2. Step 2: Convert to fraction form
    15,717.72/21,692.04 = 9,005.52/x
  3. Step 3: Cross multiply
    15,717.72x = 21,692.04 × 9,005.52
  4. Step 4: Simplify right side
    15,717.72x = 195,348,100.06
  5. Step 5: Solve for x
    x = 195,348,100.06/15,717.72
  6. Step 6: Final answer
    x = 12,428.53

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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.