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Finding the Fourth Proportional to 18,696.18, 28,036.06 and 7,001.20

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Solution

The fourth proportional to 18,696.18, 28,036.06 and 7,001.20 is: 10,498.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,696.18 : 28,036.06 = 7,001.20 : x
  2. Step 2: Convert to fraction form
    18,696.18/28,036.06 = 7,001.20/x
  3. Step 3: Cross multiply
    18,696.18x = 28,036.06 × 7,001.20
  4. Step 4: Simplify right side
    18,696.18x = 196,286,080.81
  5. Step 5: Solve for x
    x = 196,286,080.81/18,696.18
  6. Step 6: Final answer
    x = 10,498.72

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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.