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Finding the Fourth Proportional to 18,070.68, 27,106.02 and 7,681.08

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Solution

The fourth proportional to 18,070.68, 27,106.02 and 7,681.08 is: 11,521.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,070.68 : 27,106.02 = 7,681.08 : x
  2. Step 2: Convert to fraction form
    18,070.68/27,106.02 = 7,681.08/x
  3. Step 3: Cross multiply
    18,070.68x = 27,106.02 × 7,681.08
  4. Step 4: Simplify right side
    18,070.68x = 208,203,508.10
  5. Step 5: Solve for x
    x = 208,203,508.10/18,070.68
  6. Step 6: Final answer
    x = 11,521.62

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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.