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Finding the Fourth Proportional to 15,670.83, 21,625.21 and 8,957.08

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Solution

The fourth proportional to 15,670.83, 21,625.21 and 8,957.08 is: 12,360.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,670.83 : 21,625.21 = 8,957.08 : x
  2. Step 2: Convert to fraction form
    15,670.83/21,625.21 = 8,957.08/x
  3. Step 3: Cross multiply
    15,670.83x = 21,625.21 × 8,957.08
  4. Step 4: Simplify right side
    15,670.83x = 193,698,774.21
  5. Step 5: Solve for x
    x = 193,698,774.21/15,670.83
  6. Step 6: Final answer
    x = 12,360.46

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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.