Home / 15,816.03-21,826.12-8,742.45

Finding the Fourth Proportional to 15,816.03, 21,826.12 and 8,742.45

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Solution

The fourth proportional to 15,816.03, 21,826.12 and 8,742.45 is: 12,064.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,816.03 : 21,826.12 = 8,742.45 : x
  2. Step 2: Convert to fraction form
    15,816.03/21,826.12 = 8,742.45/x
  3. Step 3: Cross multiply
    15,816.03x = 21,826.12 × 8,742.45
  4. Step 4: Simplify right side
    15,816.03x = 190,813,653.66
  5. Step 5: Solve for x
    x = 190,813,653.66/15,816.03
  6. Step 6: Final answer
    x = 12,064.58

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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.