Home / 18,985.12-28,479.12-5,134

Finding the Fourth Proportional to 18,985.12, 28,479.12 and 5,134

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Solution

The fourth proportional to 18,985.12, 28,479.12 and 5,134 is: 7,701.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,985.12 : 28,479.12 = 5,134 : x
  2. Step 2: Convert to fraction form
    18,985.12/28,479.12 = 5,134/x
  3. Step 3: Cross multiply
    18,985.12x = 28,479.12 × 5,134
  4. Step 4: Simplify right side
    18,985.12x = 146,211,802.08
  5. Step 5: Solve for x
    x = 146,211,802.08/18,985.12
  6. Step 6: Final answer
    x = 7,701.39

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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.