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Finding the Fourth Proportional to 11,875.07, 17,818.81 and 8,615.07

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Solution

The fourth proportional to 11,875.07, 17,818.81 and 8,615.07 is: 12,927.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,875.07 : 17,818.81 = 8,615.07 : x
  2. Step 2: Convert to fraction form
    11,875.07/17,818.81 = 8,615.07/x
  3. Step 3: Cross multiply
    11,875.07x = 17,818.81 × 8,615.07
  4. Step 4: Simplify right side
    11,875.07x = 153,510,273.93
  5. Step 5: Solve for x
    x = 153,510,273.93/11,875.07
  6. Step 6: Final answer
    x = 12,927.10

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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.