Home / 15,649.21-21,595.83-8,479.09

Finding the Fourth Proportional to 15,649.21, 21,595.83 and 8,479.09

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Solution

The fourth proportional to 15,649.21, 21,595.83 and 8,479.09 is: 11,701.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,649.21 : 21,595.83 = 8,479.09 : x
  2. Step 2: Convert to fraction form
    15,649.21/21,595.83 = 8,479.09/x
  3. Step 3: Cross multiply
    15,649.21x = 21,595.83 × 8,479.09
  4. Step 4: Simplify right side
    15,649.21x = 183,112,986.19
  5. Step 5: Solve for x
    x = 183,112,986.19/15,649.21
  6. Step 6: Final answer
    x = 11,701.10

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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.