Home / 15,690.52-21,652.83-8,520.58

Finding the Fourth Proportional to 15,690.52, 21,652.83 and 8,520.58

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Solution

The fourth proportional to 15,690.52, 21,652.83 and 8,520.58 is: 11,758.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,690.52 : 21,652.83 = 8,520.58 : x
  2. Step 2: Convert to fraction form
    15,690.52/21,652.83 = 8,520.58/x
  3. Step 3: Cross multiply
    15,690.52x = 21,652.83 × 8,520.58
  4. Step 4: Simplify right side
    15,690.52x = 184,494,670.24
  5. Step 5: Solve for x
    x = 184,494,670.24/15,690.52
  6. Step 6: Final answer
    x = 11,758.35

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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.