Home / 18,677.55-28,019.31-7,585.20

Finding the Fourth Proportional to 18,677.55, 28,019.31 and 7,585.20

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Solution

The fourth proportional to 18,677.55, 28,019.31 and 7,585.20 is: 11,379.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,677.55 : 28,019.31 = 7,585.20 : x
  2. Step 2: Convert to fraction form
    18,677.55/28,019.31 = 7,585.20/x
  3. Step 3: Cross multiply
    18,677.55x = 28,019.31 × 7,585.20
  4. Step 4: Simplify right side
    18,677.55x = 212,532,070.21
  5. Step 5: Solve for x
    x = 212,532,070.21/18,677.55
  6. Step 6: Final answer
    x = 11,379.01

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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.