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Finding the Fourth Proportional to 19,807.61, 27,334.51 and 10,855.15

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Solution

The fourth proportional to 19,807.61, 27,334.51 and 10,855.15 is: 14,980.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,807.61 : 27,334.51 = 10,855.15 : x
  2. Step 2: Convert to fraction form
    19,807.61/27,334.51 = 10,855.15/x
  3. Step 3: Cross multiply
    19,807.61x = 27,334.51 × 10,855.15
  4. Step 4: Simplify right side
    19,807.61x = 296,720,110.75
  5. Step 5: Solve for x
    x = 296,720,110.75/19,807.61
  6. Step 6: Final answer
    x = 14,980.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.