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Finding the Fourth Proportional to 18,607.30, 27,915.45 and 5,460.10

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Solution

The fourth proportional to 18,607.30, 27,915.45 and 5,460.10 is: 8,191.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,607.30 : 27,915.45 = 5,460.10 : x
  2. Step 2: Convert to fraction form
    18,607.30/27,915.45 = 5,460.10/x
  3. Step 3: Cross multiply
    18,607.30x = 27,915.45 × 5,460.10
  4. Step 4: Simplify right side
    18,607.30x = 152,421,148.55
  5. Step 5: Solve for x
    x = 152,421,148.55/18,607.30
  6. Step 6: Final answer
    x = 8,191.47

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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.