Home / 15,477.99-21,359.28-8,404.35

Finding the Fourth Proportional to 15,477.99, 21,359.28 and 8,404.35

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Solution

The fourth proportional to 15,477.99, 21,359.28 and 8,404.35 is: 11,597.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,477.99 : 21,359.28 = 8,404.35 : x
  2. Step 2: Convert to fraction form
    15,477.99/21,359.28 = 8,404.35/x
  3. Step 3: Cross multiply
    15,477.99x = 21,359.28 × 8,404.35
  4. Step 4: Simplify right side
    15,477.99x = 179,510,864.87
  5. Step 5: Solve for x
    x = 179,510,864.87/15,477.99
  6. Step 6: Final answer
    x = 11,597.82

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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.