Home / 19,138.61-28,710.88-9,773.56

Finding the Fourth Proportional to 19,138.61, 28,710.88 and 9,773.56

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Solution

The fourth proportional to 19,138.61, 28,710.88 and 9,773.56 is: 14,661.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138.61 : 28,710.88 = 9,773.56 : x
  2. Step 2: Convert to fraction form
    19,138.61/28,710.88 = 9,773.56/x
  3. Step 3: Cross multiply
    19,138.61x = 28,710.88 × 9,773.56
  4. Step 4: Simplify right side
    19,138.61x = 280,607,412.12
  5. Step 5: Solve for x
    x = 280,607,412.12/19,138.61
  6. Step 6: Final answer
    x = 14,661.85

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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.