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Finding the Fourth Proportional to 18,343.12, 27,518.76 and 6,656.08

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Solution

The fourth proportional to 18,343.12, 27,518.76 and 6,656.08 is: 9,985.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,343.12 : 27,518.76 = 6,656.08 : x
  2. Step 2: Convert to fraction form
    18,343.12/27,518.76 = 6,656.08/x
  3. Step 3: Cross multiply
    18,343.12x = 27,518.76 × 6,656.08
  4. Step 4: Simplify right side
    18,343.12x = 183,167,068.06
  5. Step 5: Solve for x
    x = 183,167,068.06/18,343.12
  6. Step 6: Final answer
    x = 9,985.60

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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.