Home / 18,870.91-28,306.64-7,184.77

Finding the Fourth Proportional to 18,870.91, 28,306.64 and 7,184.77

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Solution

The fourth proportional to 18,870.91, 28,306.64 and 7,184.77 is: 10,777.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,870.91 : 28,306.64 = 7,184.77 : x
  2. Step 2: Convert to fraction form
    18,870.91/28,306.64 = 7,184.77/x
  3. Step 3: Cross multiply
    18,870.91x = 28,306.64 × 7,184.77
  4. Step 4: Simplify right side
    18,870.91x = 203,376,697.87
  5. Step 5: Solve for x
    x = 203,376,697.87/18,870.91
  6. Step 6: Final answer
    x = 10,777.26

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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.