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Finding the Fourth Proportional to 18,587.21, 27,877.10 and 6,897.69

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Solution

The fourth proportional to 18,587.21, 27,877.10 and 6,897.69 is: 10,345.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,587.21 : 27,877.10 = 6,897.69 : x
  2. Step 2: Convert to fraction form
    18,587.21/27,877.10 = 6,897.69/x
  3. Step 3: Cross multiply
    18,587.21x = 27,877.10 × 6,897.69
  4. Step 4: Simplify right side
    18,587.21x = 192,287,559.41
  5. Step 5: Solve for x
    x = 192,287,559.41/18,587.21
  6. Step 6: Final answer
    x = 10,345.16

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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.