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Finding the Fourth Proportional to 15,145.18, 22,702.88 and 7,245.45

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Solution

The fourth proportional to 15,145.18, 22,702.88 and 7,245.45 is: 10,861.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,145.18 : 22,702.88 = 7,245.45 : x
  2. Step 2: Convert to fraction form
    15,145.18/22,702.88 = 7,245.45/x
  3. Step 3: Cross multiply
    15,145.18x = 22,702.88 × 7,245.45
  4. Step 4: Simplify right side
    15,145.18x = 164,492,600.01
  5. Step 5: Solve for x
    x = 164,492,600.01/15,145.18
  6. Step 6: Final answer
    x = 10,861.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.