Home / 15,478.37-21,360.35-8,404.91

Finding the Fourth Proportional to 15,478.37, 21,360.35 and 8,404.91

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Solution

The fourth proportional to 15,478.37, 21,360.35 and 8,404.91 is: 11,598.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,478.37 : 21,360.35 = 8,404.91 : x
  2. Step 2: Convert to fraction form
    15,478.37/21,360.35 = 8,404.91/x
  3. Step 3: Cross multiply
    15,478.37x = 21,360.35 × 8,404.91
  4. Step 4: Simplify right side
    15,478.37x = 179,531,777.29
  5. Step 5: Solve for x
    x = 179,531,777.29/15,478.37
  6. Step 6: Final answer
    x = 11,598.88

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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.