Home / 15,509.93-21,404.18-8,795.84

Finding the Fourth Proportional to 15,509.93, 21,404.18 and 8,795.84

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Solution

The fourth proportional to 15,509.93, 21,404.18 and 8,795.84 is: 12,138.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,509.93 : 21,404.18 = 8,795.84 : x
  2. Step 2: Convert to fraction form
    15,509.93/21,404.18 = 8,795.84/x
  3. Step 3: Cross multiply
    15,509.93x = 21,404.18 × 8,795.84
  4. Step 4: Simplify right side
    15,509.93x = 188,267,591.61
  5. Step 5: Solve for x
    x = 188,267,591.61/15,509.93
  6. Step 6: Final answer
    x = 12,138.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.