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Finding the Fourth Proportional to 12,618.68, 18,931.02 and 5,693.16

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Solution

The fourth proportional to 12,618.68, 18,931.02 and 5,693.16 is: 8,541.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618.68 : 18,931.02 = 5,693.16 : x
  2. Step 2: Convert to fraction form
    12,618.68/18,931.02 = 5,693.16/x
  3. Step 3: Cross multiply
    12,618.68x = 18,931.02 × 5,693.16
  4. Step 4: Simplify right side
    12,618.68x = 107,777,325.82
  5. Step 5: Solve for x
    x = 107,777,325.82/12,618.68
  6. Step 6: Final answer
    x = 8,541.09

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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.