Home / 15,404.67-21,258.52-8,690.58

Finding the Fourth Proportional to 15,404.67, 21,258.52 and 8,690.58

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Solution

The fourth proportional to 15,404.67, 21,258.52 and 8,690.58 is: 11,993.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,404.67 : 21,258.52 = 8,690.58 : x
  2. Step 2: Convert to fraction form
    15,404.67/21,258.52 = 8,690.58/x
  3. Step 3: Cross multiply
    15,404.67x = 21,258.52 × 8,690.58
  4. Step 4: Simplify right side
    15,404.67x = 184,748,847.02
  5. Step 5: Solve for x
    x = 184,748,847.02/15,404.67
  6. Step 6: Final answer
    x = 11,993.04

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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.