Home / 15,477.49-21,358.60-8,403.85

Finding the Fourth Proportional to 15,477.49, 21,358.60 and 8,403.85

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Solution

The fourth proportional to 15,477.49, 21,358.60 and 8,403.85 is: 11,597.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,477.49 : 21,358.60 = 8,403.85 : x
  2. Step 2: Convert to fraction form
    15,477.49/21,358.60 = 8,403.85/x
  3. Step 3: Cross multiply
    15,477.49x = 21,358.60 × 8,403.85
  4. Step 4: Simplify right side
    15,477.49x = 179,494,470.61
  5. Step 5: Solve for x
    x = 179,494,470.61/15,477.49
  6. Step 6: Final answer
    x = 11,597.13

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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.