Home / 15,519.07-21,416.70-8,445.88

Finding the Fourth Proportional to 15,519.07, 21,416.70 and 8,445.88

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Solution

The fourth proportional to 15,519.07, 21,416.70 and 8,445.88 is: 11,655.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,519.07 : 21,416.70 = 8,445.88 : x
  2. Step 2: Convert to fraction form
    15,519.07/21,416.70 = 8,445.88/x
  3. Step 3: Cross multiply
    15,519.07x = 21,416.70 × 8,445.88
  4. Step 4: Simplify right side
    15,519.07x = 180,882,878.20
  5. Step 5: Solve for x
    x = 180,882,878.20/15,519.07
  6. Step 6: Final answer
    x = 11,655.52

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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.