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Finding the Fourth Proportional to 18,557.64, 27,840.06 and 6,870.96

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Solution

The fourth proportional to 18,557.64, 27,840.06 and 6,870.96 is: 10,307.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,557.64 : 27,840.06 = 6,870.96 : x
  2. Step 2: Convert to fraction form
    18,557.64/27,840.06 = 6,870.96/x
  3. Step 3: Cross multiply
    18,557.64x = 27,840.06 × 6,870.96
  4. Step 4: Simplify right side
    18,557.64x = 191,287,938.66
  5. Step 5: Solve for x
    x = 191,287,938.66/18,557.64
  6. Step 6: Final answer
    x = 10,307.77

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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.