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Finding the Fourth Proportional to 15,692.50, 21,657.57 and 9,068.50

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Solution

The fourth proportional to 15,692.50, 21,657.57 and 9,068.50 is: 12,515.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,692.50 : 21,657.57 = 9,068.50 : x
  2. Step 2: Convert to fraction form
    15,692.50/21,657.57 = 9,068.50/x
  3. Step 3: Cross multiply
    15,692.50x = 21,657.57 × 9,068.50
  4. Step 4: Simplify right side
    15,692.50x = 196,401,673.55
  5. Step 5: Solve for x
    x = 196,401,673.55/15,692.50
  6. Step 6: Final answer
    x = 12,515.64

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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.