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Finding the Fourth Proportional to 15,656.84, 21,605.24 and 8,941.54

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Solution

The fourth proportional to 15,656.84, 21,605.24 and 8,941.54 is: 12,338.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,656.84 : 21,605.24 = 8,941.54 : x
  2. Step 2: Convert to fraction form
    15,656.84/21,605.24 = 8,941.54/x
  3. Step 3: Cross multiply
    15,656.84x = 21,605.24 × 8,941.54
  4. Step 4: Simplify right side
    15,656.84x = 193,184,117.67
  5. Step 5: Solve for x
    x = 193,184,117.67/15,656.84
  6. Step 6: Final answer
    x = 12,338.64

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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.