Home / 15,690.42-21,652.02-8,520.17

Finding the Fourth Proportional to 15,690.42, 21,652.02 and 8,520.17

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Solution

The fourth proportional to 15,690.42, 21,652.02 and 8,520.17 is: 11,757.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,690.42 : 21,652.02 = 8,520.17 : x
  2. Step 2: Convert to fraction form
    15,690.42/21,652.02 = 8,520.17/x
  3. Step 3: Cross multiply
    15,690.42x = 21,652.02 × 8,520.17
  4. Step 4: Simplify right side
    15,690.42x = 184,478,782.98
  5. Step 5: Solve for x
    x = 184,478,782.98/15,690.42
  6. Step 6: Final answer
    x = 11,757.42

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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.