Home / 15,355.04-21,192.50-9,692.88

Finding the Fourth Proportional to 15,355.04, 21,192.50 and 9,692.88

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Solution

The fourth proportional to 15,355.04, 21,192.50 and 9,692.88 is: 13,377.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,355.04 : 21,192.50 = 9,692.88 : x
  2. Step 2: Convert to fraction form
    15,355.04/21,192.50 = 9,692.88/x
  3. Step 3: Cross multiply
    15,355.04x = 21,192.50 × 9,692.88
  4. Step 4: Simplify right side
    15,355.04x = 205,416,359.40
  5. Step 5: Solve for x
    x = 205,416,359.40/15,355.04
  6. Step 6: Final answer
    x = 13,377.78

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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.