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Finding the Fourth Proportional to 15,692.76, 21,657.18 and 10,318.68

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Solution

The fourth proportional to 15,692.76, 21,657.18 and 10,318.68 is: 14,240.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,692.76 : 21,657.18 = 10,318.68 : x
  2. Step 2: Convert to fraction form
    15,692.76/21,657.18 = 10,318.68/x
  3. Step 3: Cross multiply
    15,692.76x = 21,657.18 × 10,318.68
  4. Step 4: Simplify right side
    15,692.76x = 223,473,510.12
  5. Step 5: Solve for x
    x = 223,473,510.12/15,692.76
  6. Step 6: Final answer
    x = 14,240.55

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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.